cvelistv5 - CVE-2025-20311

CVE-2025-20311 (GCVE-0-2025-20311)

Vulnerability from cvelistv5

Published

2025-09-24 17:12

Modified

2025-09-30 14:28

Severity ?

7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-19 - Data Handling

Summary

References

URL

	Vendor	Product	Version
	Cisco	Cisco IOS XE Software	Version: 16.6.1 Version: 16.6.2 Version: 16.6.3 Version: 16.6.4 Version: 16.6.5 Version: 16.6.4a Version: 16.6.6 Version: 16.6.7 Version: 16.6.8 Version: 16.6.9 Version: 16.6.10 Version: 16.7.1 Version: 16.8.1 Version: 16.8.1a Version: 16.8.1s Version: 16.9.1 Version: 16.9.2 Version: 16.9.1s Version: 16.9.3 Version: 16.9.4 Version: 16.9.5 Version: 16.9.6 Version: 16.9.7 Version: 16.9.8 Version: 16.10.1 Version: 16.10.1s Version: 16.10.1e Version: 16.11.1 Version: 16.11.1b Version: 16.11.1s Version: 16.12.1 Version: 16.12.1s Version: 16.12.1c Version: 16.12.2 Version: 16.12.3 Version: 16.12.8 Version: 16.12.2s Version: 16.12.4 Version: 16.12.3s Version: 16.12.3a Version: 16.12.4a Version: 16.12.5 Version: 16.12.6 Version: 16.12.5b Version: 16.12.6a Version: 16.12.7 Version: 16.12.14 Version: 17.1.1 Version: 17.1.1s Version: 17.1.1t Version: 17.1.3 Version: 17.2.1 Version: 17.2.1a Version: 17.3.1 Version: 17.3.2 Version: 17.3.3 Version: 17.3.2a Version: 17.3.4 Version: 17.3.5 Version: 17.3.6 Version: 17.3.4b Version: 17.3.7 Version: 17.3.8 Version: 17.3.8a Version: 17.4.1 Version: 17.5.1 Version: 17.6.1 Version: 17.6.2 Version: 17.6.3 Version: 17.6.1y Version: 17.6.4 Version: 17.6.5 Version: 17.6.6 Version: 17.6.6a Version: 17.6.5a Version: 17.6.7 Version: 17.6.8 Version: 17.7.1 Version: 17.10.1 Version: 17.10.1b Version: 17.8.1 Version: 17.9.1 Version: 17.9.2 Version: 17.9.3 Version: 17.9.4 Version: 17.9.5 Version: 17.9.4a Version: 17.9.6 Version: 17.9.6a Version: 17.11.1 Version: 17.12.1 Version: 17.12.2 Version: 17.12.3 Version: 17.12.4 Version: 17.12.1z3 Version: 17.13.1 Version: 17.14.1 Version: 17.11.99SW Version: 17.15.1 Version: 17.15.2 Version: 17.15.2a Version: 17.15.2b Version: 17.16.1

fkie_cve-2025-20311

Vulnerability from fkie_nvd

Published

2025-09-24 18:15

Modified

2025-09-26 14:32

Severity ?

7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Summary

References

	URL	Tags
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-PtmD7bgy

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic.\r\n\r This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition."
    }
  ],
  "id": "CVE-2025-20311",
  "lastModified": "2025-09-26T14:32:53.583",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "psirt@cisco.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-09-24T18:15:34.757",
  "references": [
    {
      "source": "psirt@cisco.com",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-PtmD7bgy"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-19"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Primary"
    }
  ]
}

ghsa-pr4q-4px5-72j6

Vulnerability from github

Published

2025-09-24 18:30

Modified

2025-09-24 18:30

Severity ?

7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Details

This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-20311"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-24T18:15:34Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic.\n\n This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition.",
  "id": "GHSA-pr4q-4px5-72j6",
  "modified": "2025-09-24T18:30:31Z",
  "published": "2025-09-24T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20311"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-PtmD7bgy"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

ncsc-2025-0297

Vulnerability from csaf_ncscnl

Published

2025-09-25 09:20

Modified

2025-09-25 10:42

Summary

Kwetsbaarheden verholpen in Cisco IOS en Cisco IOS XE Software

Notes

The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.

Feiten

Cisco heeft kwetsbaarheden verholpen in Cisco IOS en Cisco IOS XE Software.

Interpretaties

De kwetsbaarheden omvatten verschillende problemen, waaronder een buffer overflow in de command-line interface (CLI) die kan leiden tot onverwachte herstarts van apparaten en een kwetsbaarheid in de TACACS+ protocolimplementatie die ongeauthenticeerde aanvallers in staat stelt om gevoelige gegevens te benaderen. Daarnaast zijn er kwetsbaarheden in de web UI die kunnen leiden tot cross-site scripting (XSS) aanvallen en een probleem in de NBAR-functie dat kan resulteren in een denial of service (DoS) door het versturen van gemanipuleerde CAPWAP-pakketten. Ook zijn er kwetsbaarheden in de SNMP-subsystemen die kunnen leiden tot ongeautoriseerde toegang en systeemdisruptie. Cisco vermeldt dat de kwetsbaarheid met kenmerk CVE-2025-20352 actief is misbruikt. Deze kwetsbaarheid stelt een kwaadwillende die in het bezit is van een read-only community string (SNMPv1/2) of geldige authenticatie (SNMPv3) een Denial-of-Service kan veroorzaken, of mogelijk willekeurige commando's kan uitvoeren met root-rechten. Voor dat laatste dient de kwaadwillende wel over administrator-rechten te beschikken.

Oplossingen

Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.

Kans

medium

Schade

high

CWE-19

CWE-35

Path Traversal: '.../...//'

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-121

Stack-based Buffer Overflow

CWE-141

Improper Neutralization of Parameter/Argument Delimiters

CWE-232

Improper Handling of Undefined Values

CWE-284

Improper Access Control

CWE-287

Improper Authentication

CWE-459

Incomplete Cleanup

CWE-692

Incomplete Denylist to Cross-Site Scripting

CWE-805

Buffer Access with Incorrect Length Value

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-1287

Improper Validation of Specified Type of Input

JSON

To clipboard

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Cisco heeft kwetsbaarheden verholpen in Cisco IOS en Cisco IOS XE Software.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden omvatten verschillende problemen, waaronder een buffer overflow in de command-line interface (CLI) die kan leiden tot onverwachte herstarts van apparaten en een kwetsbaarheid in de TACACS+ protocolimplementatie die ongeauthenticeerde aanvallers in staat stelt om gevoelige gegevens te benaderen. Daarnaast zijn er kwetsbaarheden in de web UI die kunnen leiden tot cross-site scripting (XSS) aanvallen en een probleem in de NBAR-functie dat kan resulteren in een denial of service (DoS) door het versturen van gemanipuleerde CAPWAP-pakketten. Ook zijn er kwetsbaarheden in de SNMP-subsystemen die kunnen leiden tot ongeautoriseerde toegang en systeemdisruptie.\n\nCisco vermeldt dat de kwetsbaarheid met kenmerk CVE-2025-20352 actief is misbruikt. Deze kwetsbaarheid stelt een kwaadwillende die in het bezit is van een read-only community string (SNMPv1/2) of geldige authenticatie (SNMPv3) een Denial-of-Service kan veroorzaken, of mogelijk willekeurige commando\u0027s kan uitvoeren met root-rechten. Voor dat laatste dient de kwaadwillende wel over administrator-rechten te beschikken.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "CWE-19",
        "title": "CWE-19"
      },
      {
        "category": "general",
        "text": "Path Traversal: \u0027.../...//\u0027",
        "title": "CWE-35"
      },
      {
        "category": "general",
        "text": "Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
        "title": "CWE-77"
      },
      {
        "category": "general",
        "text": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
        "title": "CWE-120"
      },
      {
        "category": "general",
        "text": "Stack-based Buffer Overflow",
        "title": "CWE-121"
      },
      {
        "category": "general",
        "text": "Improper Neutralization of Parameter/Argument Delimiters",
        "title": "CWE-141"
      },
      {
        "category": "general",
        "text": "Improper Handling of Undefined Values",
        "title": "CWE-232"
      },
      {
        "category": "general",
        "text": "Improper Access Control",
        "title": "CWE-284"
      },
      {
        "category": "general",
        "text": "Improper Authentication",
        "title": "CWE-287"
      },
      {
        "category": "general",
        "text": "Incomplete Cleanup",
        "title": "CWE-459"
      },
      {
        "category": "general",
        "text": "Incomplete Denylist to Cross-Site Scripting",
        "title": "CWE-692"
      },
      {
        "category": "general",
        "text": "Buffer Access with Incorrect Length Value",
        "title": "CWE-805"
      },
      {
        "category": "general",
        "text": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
        "title": "CWE-835"
      },
      {
        "category": "general",
        "text": "Improper Validation of Specified Type of Input",
        "title": "CWE-1287"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-9800cl-openscep-SB4xtxzP"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-PtmD7bgy"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-acl-L4K7VXgD"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-cli-EB7cZ6yO"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-invalid-url-dos-Nvxszf6u"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-tacacs-hdB7thJw"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-cmd-inject-rPJM8BGL"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-arg-inject-EyDDbh4e"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nbar-dos-LAvwTmeT"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secboot-UqFD8AvC"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-x4LPhte"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmpwred-x3MJyf5M"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webui-xss-VWyDgjOU"
      }
    ],
    "title": "Kwetsbaarheden verholpen in Cisco IOS en Cisco IOS XE Software",
    "tracking": {
      "current_release_date": "2025-09-25T10:42:19.129323Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2025-0297",
      "initial_release_date": "2025-09-25T09:20:07.678881Z",
      "revision_history": [
        {
          "date": "2025-09-25T09:20:07.678881Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        },
        {
          "date": "2025-09-25T10:42:19.129323Z",
          "number": "1.0.1",
          "summary": "CVE-2025-20352 blijkt actief te zijn misbruikt. Deze informatie toegevoegd."
        }
      ],
      "status": "final",
      "version": "1.0.1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "Cisco 1000 Series Integrated Services Routers"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-2"
                }
              }
            ],
            "category": "product_name",
            "name": "Cisco 1100 Series Industrial Integrated Services Routers"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-3"
                }
              }
            ],
            "category": "product_name",
            "name": "Cisco 4000 Series Integrated Services Routers"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-4"
                }
              }
            ],
            "category": "product_name",
            "name": "Cisco Cloud Services Router 1000V Series"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-5"
                }
              }
            ],
            "category": "product_name",
            "name": "Cisco IOS XE Catalyst SD-WAN"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-6"
                }
              }
            ],
            "category": "product_name",
            "name": "IOS"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-7"
                }
              }
            ],
            "category": "product_name",
            "name": "iOS XE"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-20149",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
          "title": "CWE-120"
        },
        {
          "category": "description",
          "text": "A vulnerability in Cisco IOS and IOS XE Software\u0027s CLI allows authenticated local attackers to exploit a buffer overflow, potentially leading to unexpected device reloads and denial of service (DoS).",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20149 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20149.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20149"
    },
    {
      "cve": "CVE-2025-20160",
      "cwe": {
        "id": "CWE-287",
        "name": "Improper Authentication"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Authentication",
          "title": "CWE-287"
        },
        {
          "category": "description",
          "text": "A vulnerability in the TACACS+ protocol implementation in Cisco IOS and IOS XE Software allows unauthenticated remote attackers to access sensitive data or bypass authentication due to improper checks of the TACACS+ shared secret configuration.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20160 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20160.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20160"
    },
    {
      "cve": "CVE-2025-20240",
      "cwe": {
        "id": "CWE-692",
        "name": "Incomplete Denylist to Cross-Site Scripting"
      },
      "notes": [
        {
          "category": "other",
          "text": "Incomplete Denylist to Cross-Site Scripting",
          "title": "CWE-692"
        },
        {
          "category": "description",
          "text": "A vulnerability in Cisco IOS XE Software\u0027s web UI allows unauthenticated remote attackers to perform reflected cross-site scripting (XSS) attacks due to improper input sanitization, potentially enabling cookie theft.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20240 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20240.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20240"
    },
    {
      "cve": "CVE-2025-20293",
      "cwe": {
        "id": "CWE-459",
        "name": "Incomplete Cleanup"
      },
      "notes": [
        {
          "category": "other",
          "text": "Incomplete Cleanup",
          "title": "CWE-459"
        },
        {
          "category": "description",
          "text": "A vulnerability in the Day One setup of Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers allows unauthenticated remote access to the PKI server, potentially enabling certificate requests from malicious devices.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20293 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20293.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20293"
    },
    {
      "cve": "CVE-2025-20311",
      "cwe": {
        "id": "CWE-19",
        "name": "-"
      },
      "notes": [
        {
          "category": "other",
          "text": "CWE-19",
          "title": "CWE-19"
        },
        {
          "category": "description",
          "text": "A vulnerability in Cisco IOS XE Software for Catalyst 9000 Series Switches allows unauthenticated adjacent attackers to cause a denial of service by blocking an egress port through crafted Ethernet frames.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20311 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20311.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20311"
    },
    {
      "cve": "CVE-2025-20312",
      "cwe": {
        "id": "CWE-835",
        "name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
          "title": "CWE-835"
        },
        {
          "category": "description",
          "text": "A vulnerability in Cisco IOS XE Software\u0027s SNMP subsystem allows authenticated remote attackers to exploit improper error handling in SNMP requests, leading to a denial of service condition across SNMP versions 1, 2c, and 3.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20312 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20312.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20312"
    },
    {
      "cve": "CVE-2025-20313",
      "cwe": {
        "id": "CWE-35",
        "name": "Path Traversal: \u0027.../...//\u0027"
      },
      "notes": [
        {
          "category": "other",
          "text": "Path Traversal: \u0027.../...//\u0027",
          "title": "CWE-35"
        },
        {
          "category": "other",
          "text": "Improper Handling of Undefined Values",
          "title": "CWE-232"
        },
        {
          "category": "description",
          "text": "Cisco IOS XE Software has multiple vulnerabilities that could allow both authenticated local attackers and unauthenticated attackers with physical access to execute persistent code at boot time, raising the Security Impact Rating from Medium to High.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20313 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20313.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20313"
    },
    {
      "cve": "CVE-2025-20314",
      "cwe": {
        "id": "CWE-232",
        "name": "Improper Handling of Undefined Values"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Handling of Undefined Values",
          "title": "CWE-232"
        },
        {
          "category": "other",
          "text": "Path Traversal: \u0027.../...//\u0027",
          "title": "CWE-35"
        },
        {
          "category": "description",
          "text": "Cisco IOS XE Software has multiple vulnerabilities allowing local or physical access attackers to execute persistent code at boot time, raising the Security Impact Rating from Medium to High.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20314 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20314.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20314"
    },
    {
      "cve": "CVE-2025-20315",
      "cwe": {
        "id": "CWE-805",
        "name": "Buffer Access with Incorrect Length Value"
      },
      "notes": [
        {
          "category": "other",
          "text": "Buffer Access with Incorrect Length Value",
          "title": "CWE-805"
        },
        {
          "category": "description",
          "text": "A vulnerability in Cisco IOS XE Software\u0027s NBAR feature allows unauthenticated remote attackers to exploit malformed CAPWAP packets, potentially leading to device reloads and denial of service (DoS).",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20315 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20315.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20315"
    },
    {
      "cve": "CVE-2025-20316",
      "cwe": {
        "id": "CWE-284",
        "name": "Improper Access Control"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Access Control",
          "title": "CWE-284"
        },
        {
          "category": "description",
          "text": "A vulnerability in the ACL programming of Cisco IOS XE Software for Catalyst 9500X and 9600X Series Switches allows unauthenticated remote attackers to bypass ACLs via traffic flooding from unlearned MAC addresses on SVIs.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20316 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20316.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20316"
    },
    {
      "cve": "CVE-2025-20327",
      "cwe": {
        "id": "CWE-1287",
        "name": "Improper Validation of Specified Type of Input"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Validation of Specified Type of Input",
          "title": "CWE-1287"
        },
        {
          "category": "description",
          "text": "A vulnerability in the web UI of Cisco IOS Software allows low-privilege authenticated remote attackers to exploit improper input validation, leading to a denial of service (DoS) condition via crafted HTTP requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20327 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20327.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20327"
    },
    {
      "cve": "CVE-2025-20334",
      "cwe": {
        "id": "CWE-77",
        "name": "Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
          "title": "CWE-77"
        },
        {
          "category": "description",
          "text": "A vulnerability in Cisco IOS XE Software\u0027s HTTP API subsystem allows remote command injection with root privileges due to insufficient input validation, potentially exploited by authenticated users or through social engineering.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20334 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20334.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20334"
    },
    {
      "cve": "CVE-2025-20338",
      "cwe": {
        "id": "CWE-141",
        "name": "Improper Neutralization of Parameter/Argument Delimiters"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Neutralization of Parameter/Argument Delimiters",
          "title": "CWE-141"
        },
        {
          "category": "description",
          "text": "A vulnerability in Cisco IOS XE Software\u0027s CLI allows authenticated local attackers with administrative privileges to execute arbitrary commands as root due to insufficient validation of user arguments.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20338 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20338.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.0,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20338"
    },
    {
      "cve": "CVE-2025-20352",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "other",
          "text": "Stack-based Buffer Overflow",
          "title": "CWE-121"
        },
        {
          "category": "description",
          "text": "A vulnerability in the SNMP subsystem of Cisco IOS and IOS XE Software allows authenticated remote attackers to execute code as the root user or cause a denial of service, depending on their access level.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4",
          "CSAFPID-5",
          "CSAFPID-6",
          "CSAFPID-7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20352 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20352.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4",
            "CSAFPID-5",
            "CSAFPID-6",
            "CSAFPID-7"
          ]
        }
      ],
      "title": "CVE-2025-20352"
    }
  ]
}

cisco-sa-cat9k-ptmd7bgy

Vulnerability from csaf_cisco

Published

2025-09-24 16:00

Modified

2025-09-30 14:26

Summary

Cisco IOS XE Software for Catalyst 9000 Series Switches Denial of Service Vulnerability

Notes

Summary

A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is part of the September 2025 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2025 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75296"].

Vulnerable Products

This vulnerability affects the following Cisco Catalyst 9000 switching family platforms if they are running a vulnerable release of Cisco IOS XE Software and have a trunk port, or a Cisco TrustSec-enabled port, or a MACSec-enabled port enabled: Catalyst 9200 Series Switches Catalyst 9300 Series Switches Catalyst 9400 Series Switches Catalyst 9500 Series Switches Catalyst 9600 Series Switches Meraki MS390 and Cisco Catalyst 9300 Series Switches that are running software earlier than Meraki CS 17.2.2 are affected. Cloud-Managed Hybrid Operating Mode for Catalyst Wireless LAN Controllers that are running Cisco IOS XE Software releases earlier than Release 17.15.4 are also affected. This is fixed in Cisco IOS XE Software Release 17.15.4. For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory. Determine the Device Configuration Determine Whether a Trunk Port is Enabled on a Device To determine whether a device has a trunk port enabled, use Administrator privileges to connect to the device CLI and use the show running-config | include switchport mode trunk|dynamic|dot1q-tunnel command. If output is returned, the device is affected, as shown in the following example: Switch#show running-config | include switchport mode trunk|dynamic|dot1q-tunnel switchport mode trunk Switch# Determine Whether a Device Has a Cisco TrustSec-Enabled Port To determine whether a device has a Cisco TrustSec-enabled port, use Administrator privileges to connect the device CLI and use the show running-config | include cts manual command. If output is returned, the device is affected, as shown in the following example: Switch#show running-config | include cts manual cts manual Switch# Determine Whether a Device Has a MACsec-Enabled Port To determine whether a device has a MACsec-enabled port, use Administrator privileges to connect to the device CLI and use the show macsec summary command. If the returned output includes any interfaces, the device is affected, as shown in the following example: Switch#show macsec summary Interface Transmit SC Receive SC Gi1/0/1 0 0 Switch#

Products Confirmed Not Vulnerable

Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability. Cisco has confirmed that this vulnerability does not affect the following Cisco products: Catalyst 9800 Series Wireless Controllers IE9300 Rugged Series Switches IOS Software IOS XR Software NX-OS Software

Details

The handling of certain crafted Ethernet frames could result in the egress port FIFO queue of the affected port becoming stuck, which would result in the port dropping all outbound traffic, as shown in the following example: Switch#show interfaces tenGigabitEthernet 6/0/1 | include Total output drops Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 461992 Switch# Repeating the command multiple times will show a continuous increase in the Total output drops, which is an indication that traffic is not being forwarded through the interface. To recover from this condition, first, identify the source of the crafted frames. Then, either remove that device or block that device by using either VLAN or MAC ACLs. Once the source of the crafted frames has been removed, reload the device. This is the only way to recover the device.

Workarounds

There are no workarounds that address this vulnerability.

Fixed Software

Cisco considers any workarounds and mitigations to be temporary solutions until an upgrade to a fixed software release is available. To fully remediate this vulnerability and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory. Cisco IOS and IOS XE Software To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"]. This tool identifies any Cisco security advisories that impact a specific software release and the earliest release that fixes the vulnerabilities that are described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities that are described in all the advisories that the Software Checker identifies (“Combined First Fixed”). To use the tool, go to the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] page and follow the instructions. Alternatively, use the following form to determine whether a release is affected by any Cisco Security Advisory. To use the form, follow these steps: Choose which advisories the tool will search—only this advisory, only advisories with a Critical or High Security Impact Rating (SIR) ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr"], or all advisories. Enter a release number—for example, 15.9(3)M2 or 17.3.3. Click Check. Only this advisory All Critical and High advisories All advisories

Vulnerability Policy

To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

Exploitation and Public Announcements

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Source

This vulnerability was found during the resolution of a Cisco Technical Assistance Center (TAC) support case.

Legal Disclaimer

SOFTWARE DOWNLOADS AND TECHNICAL SUPPORT The Cisco Support and Downloads ["https://www.cisco.com/c/en/us/support/index.html"] page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool. Please note that customers may download only software that was procured from Cisco directly or through a Cisco authorized reseller or partner and for which the license is still valid. Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"]. Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories ["https://www.cisco.com/go/psirt"] for the relevant Cisco products to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"] or their contracted maintenance providers. LEGAL DISCLAIMER DETAILS CISCO DOES NOT MAKE ANY EXPRESS OR IMPLIED GUARANTEES OR WARRANTIES OF ANY KIND, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, CISCO DOES NOT GUARANTEE THE ACCURACY OR COMPLETENESS OF THIS INFORMATION. THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. Copies or summaries of the information contained in this Security Advisory may lack important information or contain factual errors. Customers are advised to visit the Cisco Security Advisories ["https://www.cisco.com/go/psirt"] page for the most recent version of this Security Advisory. The Cisco Product Security Incident Response Team (PSIRT) assesses only the affected and fixed release information that is documented in this advisory. See the Cisco Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"] for more information.

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{
  "document": {
    "acknowledgments": [
      {
        "summary": "This vulnerability was found during the resolution of a Cisco Technical Assistance Center (TAC) support case."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic.\r\n\r\nThis vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the September 2025 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2025 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75296\"].",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects the following Cisco Catalyst 9000 switching family platforms if they are running a vulnerable release of Cisco IOS XE Software and have a trunk port, or a Cisco TrustSec-enabled port, or a MACSec-enabled port enabled:\r\n\r\nCatalyst 9200 Series Switches\r\nCatalyst 9300 Series Switches\r\nCatalyst 9400 Series Switches\r\nCatalyst 9500 Series Switches\r\nCatalyst 9600 Series Switches\r\n\r\nMeraki MS390 and Cisco Catalyst 9300 Series Switches that are running software earlier than Meraki CS 17.2.2 are affected. Cloud-Managed Hybrid Operating Mode for Catalyst Wireless LAN Controllers that are running Cisco IOS XE Software releases earlier than Release 17.15.4 are also affected. This is fixed in Cisco IOS XE Software Release 17.15.4.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n  Determine the Device Configuration\r\nDetermine Whether a Trunk Port is Enabled on a Device\r\n\r\nTo determine whether a device has a trunk port enabled, use Administrator privileges to connect to the device CLI and use the show running-config | include switchport mode trunk|dynamic|dot1q-tunnel command. If output is returned, the device is affected, as shown in the following example:\r\n\r\n\r\nSwitch#show running-config | include switchport mode trunk|dynamic|dot1q-tunnel\r\n switchport mode trunk\r\nSwitch#\r\n\r\nDetermine Whether a Device Has a Cisco TrustSec-Enabled Port\r\n\r\nTo determine whether a device has a Cisco TrustSec-enabled port, use Administrator privileges to connect the device CLI and use the show running-config | include cts manual command. If output is returned, the device is affected, as shown in the following example:\r\n\r\n\r\nSwitch#show running-config | include cts manual\r\ncts manual\r\nSwitch#\r\n\r\nDetermine Whether a Device Has a MACsec-Enabled Port\r\n\r\nTo determine whether a device has a MACsec-enabled port, use Administrator privileges to connect to the device CLI and use the show macsec summary command. If the returned output includes any interfaces, the device is affected, as shown in the following example:\r\n\r\n\r\nSwitch#show macsec summary\r\nInterface                     Transmit SC         Receive SC\r\nGi1/0/1                            0                   0\r\nSwitch#",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nCatalyst 9800 Series Wireless Controllers\r\nIE9300 Rugged Series Switches\r\nIOS Software\r\nIOS XR Software\r\nNX-OS Software",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "The handling of certain crafted Ethernet frames could result in the egress port FIFO queue of the affected port becoming stuck, which would result in the port dropping all outbound traffic, as shown in the following example:\r\n\r\nSwitch#show interfaces tenGigabitEthernet 6/0/1 | include Total output drops\r\n Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 461992\r\nSwitch#\r\nRepeating the command multiple times will show a continuous increase in the Total output drops, which is an indication that traffic is not being forwarded through the interface.\r\n\r\nTo recover from this condition, first, identify the source of the crafted frames. Then, either remove that device or block that device by using either VLAN or MAC ACLs. Once the source of the crafted frames has been removed, reload the device. This is the only way to recover the device.",
        "title": "Details"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco considers any workarounds and mitigations to be temporary solutions until an upgrade to a fixed software release is available. To fully remediate this vulnerability and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory.\r\n      Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"]. This tool identifies any Cisco security advisories that impact a specific software release and the earliest release that fixes the vulnerabilities that are described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities that are described in all the advisories that the Software Checker identifies (\u201cCombined First Fixed\u201d).\r\n\r\nTo use the tool, go to the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] page and follow the instructions. Alternatively, use the following form to determine whether a release is affected by any Cisco Security Advisory. To use the form, follow these steps:\r\n\r\nChoose which advisories the tool will search\u2014only this advisory, only advisories with a Critical or High Security Impact Rating (SIR) [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr\"], or all advisories.\r\nEnter a release number\u2014for example, 15.9(3)M2 or 17.3.3.\r\nClick Check.\r\n\r\n       Only this advisory  All Critical and High advisories  All advisories",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
        "title": "Vulnerability Policy"
      },
      {
        "category": "general",
        "text": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "This vulnerability was found during the resolution of a Cisco Technical Assistance Center (TAC) support case.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "SOFTWARE DOWNLOADS AND TECHNICAL SUPPORT\r\n\r\nThe Cisco Support and Downloads [\"https://www.cisco.com/c/en/us/support/index.html\"] page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool. Please note that customers may download only software that was procured from Cisco directly or through a Cisco authorized reseller or partner and for which the license is still valid.\r\n\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC) [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]. Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories [\"https://www.cisco.com/go/psirt\"] for the relevant Cisco products to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"] or their contracted maintenance providers.\r\n    LEGAL DISCLAIMER DETAILS\r\n\r\nCISCO DOES NOT MAKE ANY EXPRESS OR IMPLIED GUARANTEES OR WARRANTIES OF ANY KIND, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, CISCO DOES NOT GUARANTEE THE ACCURACY OR COMPLETENESS OF THIS INFORMATION. THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nCopies or summaries of the information contained in this Security Advisory may lack important information or contain factual errors. Customers are advised to visit the Cisco Security Advisories [\"https://www.cisco.com/go/psirt\"] page for the most recent version of this Security Advisory. The Cisco Product Security Incident Response Team (PSIRT) assesses only the affected and fixed release information that is documented in this advisory. See the Cisco Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] for more information.",
        "title": "Legal Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@cisco.com",
      "issuing_authority": "Cisco PSIRT",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco IOS XE Software for Catalyst 9000 Series Switches Denial of Service Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-PtmD7bgy"
      },
      {
        "category": "external",
        "summary": "Cisco Event Response: September 2025 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication",
        "url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75296"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "Cisco Software Checker",
        "url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
      },
      {
        "category": "external",
        "summary": "Security Impact Rating (SIR)",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "Cisco Support and Downloads",
        "url": "https://www.cisco.com/c/en/us/support/index.html"
      },
      {
        "category": "external",
        "summary": "Cisco Technical Assistance Center (TAC)",
        "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
      },
      {
        "category": "external",
        "summary": "considering software upgrades",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "the advisories",
        "url": "https://www.cisco.com/go/psirt"
      }
    ],
    "title": "Cisco IOS XE Software for Catalyst 9000 Series Switches Denial of Service Vulnerability",
    "tracking": {
      "current_release_date": "2025-09-30T14:26:46+00:00",
      "generator": {
        "date": "2025-09-30T14:26:49+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-cat9k-PtmD7bgy",
      "initial_release_date": "2025-09-24T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2025-09-24T16:06:17+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        },
        {
          "date": "2025-09-30T14:26:46+00:00",
          "number": "1.1.0",
          "summary": "Updated the first sentence to clarify the feature information."
        }
      ],
      "status": "final",
      "version": "1.1.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.6.1",
                    "product": {
                      "name": "16.6.1",
                      "product_id": "CSAFPID-218901"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.2",
                    "product": {
                      "name": "16.6.2",
                      "product_id": "CSAFPID-228706"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.3",
                    "product": {
                      "name": "16.6.3",
                      "product_id": "CSAFPID-231682"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.4",
                    "product": {
                      "name": "16.6.4",
                      "product_id": "CSAFPID-233155"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.5",
                    "product": {
                      "name": "16.6.5",
                      "product_id": "CSAFPID-241736"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.4s",
                    "product": {
                      "name": "16.6.4s",
                      "product_id": "CSAFPID-244900"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.4a",
                    "product": {
                      "name": "16.6.4a",
                      "product_id": "CSAFPID-247629"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.6",
                    "product": {
                      "name": "16.6.6",
                      "product_id": "CSAFPID-252914"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.7",
                    "product": {
                      "name": "16.6.7",
                      "product_id": "CSAFPID-261241"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.8",
                    "product": {
                      "name": "16.6.8",
                      "product_id": "CSAFPID-277148"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.9",
                    "product": {
                      "name": "16.6.9",
                      "product_id": "CSAFPID-280801"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.10",
                    "product": {
                      "name": "16.6.10",
                      "product_id": "CSAFPID-283835"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.6"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.7.1",
                    "product": {
                      "name": "16.7.1",
                      "product_id": "CSAFPID-218903"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.7"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.8.1",
                    "product": {
                      "name": "16.8.1",
                      "product_id": "CSAFPID-218905"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1a",
                    "product": {
                      "name": "16.8.1a",
                      "product_id": "CSAFPID-235307"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1s",
                    "product": {
                      "name": "16.8.1s",
                      "product_id": "CSAFPID-236834"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.8"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.9.1",
                    "product": {
                      "name": "16.9.1",
                      "product_id": "CSAFPID-225856"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.2",
                    "product": {
                      "name": "16.9.2",
                      "product_id": "CSAFPID-232008"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.1s",
                    "product": {
                      "name": "16.9.1s",
                      "product_id": "CSAFPID-244530"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.3",
                    "product": {
                      "name": "16.9.3",
                      "product_id": "CSAFPID-251075"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.2s",
                    "product": {
                      "name": "16.9.2s",
                      "product_id": "CSAFPID-252272"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.4",
                    "product": {
                      "name": "16.9.4",
                      "product_id": "CSAFPID-262390"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.3s",
                    "product": {
                      "name": "16.9.3s",
                      "product_id": "CSAFPID-262549"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.5",
                    "product": {
                      "name": "16.9.5",
                      "product_id": "CSAFPID-271798"
                    }
                  },
                  {
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                ],
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            ],
            "category": "product_family",
            "name": "Cisco IOS XE Software"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-20311",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn45401"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-218901",
          "CSAFPID-218903",
          "CSAFPID-218905",
          "CSAFPID-225856",
          "CSAFPID-225858",
          "CSAFPID-227918",
          "CSAFPID-227920",
          "CSAFPID-228706",
          "CSAFPID-231682",
          "CSAFPID-232008",
          "CSAFPID-233155",
          "CSAFPID-235307",
          "CSAFPID-236834",
          "CSAFPID-241736",
          "CSAFPID-244530",
          "CSAFPID-244900",
          "CSAFPID-245377",
          "CSAFPID-247629",
          "CSAFPID-251075",
          "CSAFPID-251225",
          "CSAFPID-252272",
          "CSAFPID-252913",
          "CSAFPID-252914",
          "CSAFPID-254712",
          "CSAFPID-257955",
          "CSAFPID-260741",
          "CSAFPID-261241",
          "CSAFPID-261465",
          "CSAFPID-262390",
          "CSAFPID-262549",
          "CSAFPID-262588",
          "CSAFPID-262590",
          "CSAFPID-262592",
          "CSAFPID-264096",
          "CSAFPID-265735",
          "CSAFPID-267110",
          "CSAFPID-267605",
          "CSAFPID-271798",
          "CSAFPID-273445",
          "CSAFPID-273448",
          "CSAFPID-273509",
          "CSAFPID-274818",
          "CSAFPID-275538",
          "CSAFPID-277099",
          "CSAFPID-277147",
          "CSAFPID-277148",
          "CSAFPID-277255",
          "CSAFPID-277321",
          "CSAFPID-277338",
          "CSAFPID-277343",
          "CSAFPID-277348",
          "CSAFPID-277357",
          "CSAFPID-277945",
          "CSAFPID-278018",
          "CSAFPID-278019",
          "CSAFPID-278023",
          "CSAFPID-278025",
          "CSAFPID-278881",
          "CSAFPID-280463",
          "CSAFPID-280555",
          "CSAFPID-280651",
          "CSAFPID-280652",
          "CSAFPID-280801",
          "CSAFPID-280937",
          "CSAFPID-280938",
          "CSAFPID-281654",
          "CSAFPID-282028",
          "CSAFPID-282115",
          "CSAFPID-282116",
          "CSAFPID-282117",
          "CSAFPID-283835",
          "CSAFPID-284331",
          "CSAFPID-285325",
          "CSAFPID-285326",
          "CSAFPID-286031",
          "CSAFPID-286409",
          "CSAFPID-286477",
          "CSAFPID-286799",
          "CSAFPID-286801",
          "CSAFPID-287087",
          "CSAFPID-288221",
          "CSAFPID-290596",
          "CSAFPID-290660",
          "CSAFPID-290671",
          "CSAFPID-290674",
          "CSAFPID-292650",
          "CSAFPID-292656",
          "CSAFPID-292698",
          "CSAFPID-295359",
          "CSAFPID-295361",
          "CSAFPID-295398",
          "CSAFPID-295412",
          "CSAFPID-296860",
          "CSAFPID-300263",
          "CSAFPID-300834",
          "CSAFPID-300845",
          "CSAFPID-300847",
          "CSAFPID-300848",
          "CSAFPID-300850",
          "CSAFPID-300851",
          "CSAFPID-300936",
          "CSAFPID-300938",
          "CSAFPID-301219",
          "CSAFPID-301716",
          "CSAFPID-301722",
          "CSAFPID-301723",
          "CSAFPID-302782",
          "CSAFPID-302891",
          "CSAFPID-303015",
          "CSAFPID-303213",
          "CSAFPID-303311",
          "CSAFPID-303324",
          "CSAFPID-305303"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-218901",
            "CSAFPID-218903",
            "CSAFPID-218905",
            "CSAFPID-225856",
            "CSAFPID-225858",
            "CSAFPID-227918",
            "CSAFPID-227920",
            "CSAFPID-228706",
            "CSAFPID-231682",
            "CSAFPID-232008",
            "CSAFPID-233155",
            "CSAFPID-235307",
            "CSAFPID-236834",
            "CSAFPID-241736",
            "CSAFPID-244530",
            "CSAFPID-244900",
            "CSAFPID-245377",
            "CSAFPID-247629",
            "CSAFPID-251075",
            "CSAFPID-251225",
            "CSAFPID-252272",
            "CSAFPID-252913",
            "CSAFPID-252914",
            "CSAFPID-254712",
            "CSAFPID-257955",
            "CSAFPID-260741",
            "CSAFPID-261241",
            "CSAFPID-261465",
            "CSAFPID-262390",
            "CSAFPID-262549",
            "CSAFPID-262588",
            "CSAFPID-262590",
            "CSAFPID-262592",
            "CSAFPID-264096",
            "CSAFPID-265735",
            "CSAFPID-267110",
            "CSAFPID-267605",
            "CSAFPID-271798",
            "CSAFPID-273445",
            "CSAFPID-273448",
            "CSAFPID-273509",
            "CSAFPID-274818",
            "CSAFPID-275538",
            "CSAFPID-277099",
            "CSAFPID-277147",
            "CSAFPID-277148",
            "CSAFPID-277255",
            "CSAFPID-277321",
            "CSAFPID-277338",
            "CSAFPID-277343",
            "CSAFPID-277348",
            "CSAFPID-277357",
            "CSAFPID-277945",
            "CSAFPID-278018",
            "CSAFPID-278019",
            "CSAFPID-278023",
            "CSAFPID-278025",
            "CSAFPID-278881",
            "CSAFPID-280463",
            "CSAFPID-280555",
            "CSAFPID-280651",
            "CSAFPID-280652",
            "CSAFPID-280801",
            "CSAFPID-280937",
            "CSAFPID-280938",
            "CSAFPID-281654",
            "CSAFPID-282028",
            "CSAFPID-282115",
            "CSAFPID-282116",
            "CSAFPID-282117",
            "CSAFPID-283835",
            "CSAFPID-284331",
            "CSAFPID-285325",
            "CSAFPID-285326",
            "CSAFPID-286031",
            "CSAFPID-286409",
            "CSAFPID-286477",
            "CSAFPID-286799",
            "CSAFPID-286801",
            "CSAFPID-287087",
            "CSAFPID-288221",
            "CSAFPID-290596",
            "CSAFPID-290660",
            "CSAFPID-290671",
            "CSAFPID-290674",
            "CSAFPID-292650",
            "CSAFPID-292656",
            "CSAFPID-292698",
            "CSAFPID-295359",
            "CSAFPID-295361",
            "CSAFPID-295398",
            "CSAFPID-295412",
            "CSAFPID-296860",
            "CSAFPID-300263",
            "CSAFPID-300834",
            "CSAFPID-300845",
            "CSAFPID-300847",
            "CSAFPID-300848",
            "CSAFPID-300850",
            "CSAFPID-300851",
            "CSAFPID-300936",
            "CSAFPID-300938",
            "CSAFPID-301219",
            "CSAFPID-301716",
            "CSAFPID-301722",
            "CSAFPID-301723",
            "CSAFPID-302782",
            "CSAFPID-302891",
            "CSAFPID-303015",
            "CSAFPID-303213",
            "CSAFPID-303311",
            "CSAFPID-303324",
            "CSAFPID-305303"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-218901",
            "CSAFPID-218903",
            "CSAFPID-218905",
            "CSAFPID-225856",
            "CSAFPID-225858",
            "CSAFPID-227918",
            "CSAFPID-227920",
            "CSAFPID-228706",
            "CSAFPID-231682",
            "CSAFPID-232008",
            "CSAFPID-233155",
            "CSAFPID-235307",
            "CSAFPID-236834",
            "CSAFPID-241736",
            "CSAFPID-244530",
            "CSAFPID-244900",
            "CSAFPID-245377",
            "CSAFPID-247629",
            "CSAFPID-251075",
            "CSAFPID-251225",
            "CSAFPID-252272",
            "CSAFPID-252913",
            "CSAFPID-252914",
            "CSAFPID-254712",
            "CSAFPID-257955",
            "CSAFPID-260741",
            "CSAFPID-261241",
            "CSAFPID-261465",
            "CSAFPID-262390",
            "CSAFPID-262549",
            "CSAFPID-262588",
            "CSAFPID-262590",
            "CSAFPID-262592",
            "CSAFPID-264096",
            "CSAFPID-265735",
            "CSAFPID-267110",
            "CSAFPID-267605",
            "CSAFPID-271798",
            "CSAFPID-273445",
            "CSAFPID-273448",
            "CSAFPID-273509",
            "CSAFPID-274818",
            "CSAFPID-275538",
            "CSAFPID-277099",
            "CSAFPID-277147",
            "CSAFPID-277148",
            "CSAFPID-277255",
            "CSAFPID-277321",
            "CSAFPID-277338",
            "CSAFPID-277343",
            "CSAFPID-277348",
            "CSAFPID-277357",
            "CSAFPID-277945",
            "CSAFPID-278018",
            "CSAFPID-278019",
            "CSAFPID-278023",
            "CSAFPID-278025",
            "CSAFPID-278881",
            "CSAFPID-280463",
            "CSAFPID-280555",
            "CSAFPID-280651",
            "CSAFPID-280652",
            "CSAFPID-280801",
            "CSAFPID-280937",
            "CSAFPID-280938",
            "CSAFPID-281654",
            "CSAFPID-282028",
            "CSAFPID-282115",
            "CSAFPID-282116",
            "CSAFPID-282117",
            "CSAFPID-283835",
            "CSAFPID-284331",
            "CSAFPID-285325",
            "CSAFPID-285326",
            "CSAFPID-286031",
            "CSAFPID-286409",
            "CSAFPID-286477",
            "CSAFPID-286799",
            "CSAFPID-286801",
            "CSAFPID-287087",
            "CSAFPID-288221",
            "CSAFPID-290596",
            "CSAFPID-290660",
            "CSAFPID-290671",
            "CSAFPID-290674",
            "CSAFPID-292650",
            "CSAFPID-292656",
            "CSAFPID-292698",
            "CSAFPID-295359",
            "CSAFPID-295361",
            "CSAFPID-295398",
            "CSAFPID-295412",
            "CSAFPID-296860",
            "CSAFPID-300263",
            "CSAFPID-300834",
            "CSAFPID-300845",
            "CSAFPID-300847",
            "CSAFPID-300848",
            "CSAFPID-300850",
            "CSAFPID-300851",
            "CSAFPID-300936",
            "CSAFPID-300938",
            "CSAFPID-301219",
            "CSAFPID-301716",
            "CSAFPID-301722",
            "CSAFPID-301723",
            "CSAFPID-302782",
            "CSAFPID-302891",
            "CSAFPID-303015",
            "CSAFPID-303213",
            "CSAFPID-303311",
            "CSAFPID-303324",
            "CSAFPID-305303"
          ]
        }
      ],
      "title": "Cisco IOS XE Software for Catalyst 9000 Series Switches Denial of Service Vulnerability"
    }
  ]
}

CERTFR-2025-AVI-0818

Vulnerability from certfr_avis

De multiples vulnérabilités ont été découvertes dans Cisco IOS et IOS XE. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.

Cisco indique que la vulnérabilité CVE-2025-20352 est activement exploitée.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Cisco	IOS XE	IOS XE, se référer au bulletin de sécurité de l'éditeur pour les versions vulnérables (cf. section Documentation)
	Cisco	IOS	IOS, se référer au bulletin de sécurité de l'éditeur pour les versions vulnérables (cf. section Documentation)

References

Title

Publication Time

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CVE-2025-20311 (GCVE-0-2025-20311)

Vulnerability from cvelistv5

fkie_cve-2025-20311

Vulnerability from fkie_nvd

ghsa-pr4q-4px5-72j6

Vulnerability from github

ncsc-2025-0297

Vulnerability from csaf_ncscnl

cisco-sa-cat9k-ptmd7bgy

Vulnerability from csaf_cisco

CERTFR-2025-AVI-0818

Vulnerability from certfr_avis

Solutions

Tags

Sightings

Nomenclature