{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the RADIUS setting Reject RADIUS requests from clients with repeated failures on Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause Cisco ISE to restart unexpectedly.\r\n\r\nThis vulnerability is due to a logic error when processing a RADIUS access request for a MAC address that is already a rejected endpoint. An attacker could exploit this vulnerability by sending a specific sequence of multiple crafted RADIUS access request messages to Cisco ISE. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when Cisco ISE restarts."
    }
  ],
  "id": "CVE-2025-20343",
  "lastModified": "2025-11-06T19:45:30.990",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.0,
        "source": "psirt@cisco.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-11-05T17:15:37.443",
  "references": [
    {
      "source": "psirt@cisco.com",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-radsupress-dos-8YF3JThh"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-697"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Primary"
    }
  ]
}

{
  "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 RADIUS setting Reject RADIUS requests from clients with repeated failures on Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause Cisco ISE to restart unexpectedly.\r\n\r\nThis vulnerability is due to a logic error when processing a RADIUS access request for a MAC address that is already a rejected endpoint. An attacker could exploit this vulnerability by sending a specific sequence of multiple crafted RADIUS access request messages to Cisco ISE. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when Cisco ISE restarts.\r\n\r\nCisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.\r\n\r\n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects Cisco ISE releases 3.4.0, 3.4 Patch 1, 3.4 Patch 2, and 3.4 Patch 3, which have the Reject RADIUS requests from clients with repeated failures setting enabled by default.\r\n\r\nFor more information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n  Determine the Device Configuration\r\nTo determine if Reject RADIUS requests from clients with repeated failures is enabled, choose Administration \u003e System \u003e Settings \u003e Protocols \u003e RADIUS in the Cisco ISE web UI. Navigate to the Suppress Repeated Failed Clients and repeated accounting section. The check box that enables the setting should be checked because it is a default configuration.\r\n\r\nFor more information on this feature, which is new in Cisco ISE Release 3.4.0, see RADIUS Settings [\"https://www.cisco.com/c/en/us/td/docs/security/ise/3-4/admin_guide/b_ise_admin_3_4/b_ISE_admin_segmentation.html#t_security_settings_33\"] in the Cisco Identity Services Engine Administrator Guide, Release 3.4.",
        "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 Cisco ISE Passive Identity Connector (ISE-PIC).",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "Cisco ISE devices are affected by this vulnerability only if Reject RADIUS requests from clients with repeated failures is configured.\r\n\r\nAs a workaround, administrators can disable this setting using the following steps:\r\n\r\nChoose Administration \u003e System \u003e Settings \u003e Protocols \u003e RADIUS.\r\nNavigate to the Suppress Repeated Failed Clients and repeated accounting section.\r\nUncheck only the Reject RADIUS requests from clients with repeated failures check box.\r\n\r\nThis setting is enabled by default and will be configured in most environments. If this configuration setting is disabled, the Cisco ISE device is not affected by this vulnerability. However, Cisco recommends re-enabling this configuration setting once the device has been upgraded to the fixed code.\r\n\r\nFor more information on this feature, which is new in Cisco ISE Release 3.4.0, see RADIUS Settings [\"https://www.cisco.com/c/en/us/td/docs/security/ise/3-4/admin_guide/b_ise_admin_3_4/b_ISE_admin_segmentation.html#t_security_settings_33\"] in the Cisco Identity Services Engine Administrator Guide, Release 3.4.\r\n\r\nWhile this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
        "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      Fixed Releases\r\nCustomers are advised to upgrade to an appropriate fixed software release [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] as indicated in the following table:\r\n        Cisco ISE Release  First Fixed Release          3.3 and earlier  Not vulnerable      3.4  3.4 Patch 4      3.5  Not vulnerable\r\nFor instructions on upgrading a device, see the Upgrade Guides on the Cisco Identity Service Engine [\"https://www.cisco.com/c/en/us/support/security/identity-services-engine/series.html\"] support page.\r\n\r\nThe Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.",
        "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 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 Identity Services Engine RADIUS Suppression Denial of Service Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-radsupress-dos-8YF3JThh"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "RADIUS Settings",
        "url": "https://www.cisco.com/c/en/us/td/docs/security/ise/3-4/admin_guide/b_ise_admin_3_4/b_ISE_admin_segmentation.html#t_security_settings_33"
      },
      {
        "category": "external",
        "summary": "fixed software release",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco Identity Service Engine",
        "url": "https://www.cisco.com/c/en/us/support/security/identity-services-engine/series.html"
      },
      {
        "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": "the advisories",
        "url": "https://www.cisco.com/go/psirt"
      }
    ],
    "title": "Cisco Identity Services Engine RADIUS Suppression Denial of Service Vulnerability",
    "tracking": {
      "current_release_date": "2025-11-05T16:00:00+00:00",
      "generator": {
        "date": "2025-11-05T15:55:25+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-ise-radsupress-dos-8YF3JThh",
      "initial_release_date": "2025-11-05T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2025-11-05T15:55:20+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Identity Services Engine Software",
            "product": {
              "name": "Cisco Identity Services Engine Software ",
              "product_id": "CSAFPID-111903"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-20343",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwq27605"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-111903"
        ]
      },
      "release_date": "2025-11-05T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-111903"
          ],
          "url": "https://software.cisco.com"
        },
        {
          "category": "workaround",
          "details": "Cisco ISE devices are affected by this vulnerability only if Reject RADIUS requests from clients with repeated failures is configured.\r\n\r\nAs a workaround, administrators can disable this setting using the following steps:\r\n\r\nChoose Administration \u003e System \u003e Settings \u003e Protocols \u003e RADIUS.\r\nNavigate to the Suppress Repeated Failed Clients and repeated accounting section.\r\nUncheck only the Reject RADIUS requests from clients with repeated failures check box.\r\n\r\nThis setting is enabled by default and will be configured in most environments. If this configuration setting is disabled, the Cisco ISE device is not affected by this vulnerability. However, Cisco recommends re-enabling this configuration setting once the device has been upgraded to the fixed code.\r\n\r\nFor more information on this feature, which is new in Cisco ISE Release 3.4.0, see RADIUS Settings [\"https://www.cisco.com/c/en/us/td/docs/security/ise/3-4/admin_guide/b_ise_admin_3_4/b_ISE_admin_segmentation.html#t_security_settings_33\"] in the Cisco Identity Services Engine Administrator Guide, Release 3.4.\r\n\r\nWhile this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
          "product_ids": [
            "CSAFPID-111903"
          ]
        }
      ],
      "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-111903"
          ]
        }
      ],
      "title": "Cisco Identity Services Engine Radius Suppression Denial of Service Vulnerability"
    }
  ]
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "ISE versions 3.4 ant\u00e9rieures \u00e0 3.4 Patch 4",
      "product": {
        "name": "Identity Services Engine",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Unified CCX versions ant\u00e9rieures \u00e0 12.5 SU3 ES07",
      "product": {
        "name": "Unified Contact Center Express (Unified CCX)",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Unified CCX versions 15.x ant\u00e9rieures \u00e0 15.0 ES01",
      "product": {
        "name": "Unified Contact Center Express (Unified CCX)",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2025-20358",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-20358"
    },
    {
      "name": "CVE-2025-20343",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-20343"
    },
    {
      "name": "CVE-2025-20354",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-20354"
    }
  ],
  "initial_release_date": "2025-11-06T00:00:00",
  "last_revision_date": "2025-11-06T00:00:00",
  "links": [],
  "reference": "CERTFR-2025-AVI-0968",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2025-11-06T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Cisco. Elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance et un d\u00e9ni de service \u00e0 distance.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Cisco",
  "vendor_advisories": [
    {
      "published_at": "2025-11-05",
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ise-radsupress-dos-8YF3JThh",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-radsupress-dos-8YF3JThh"
    },
    {
      "published_at": "2025-11-05",
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-cc-unauth-rce-QeN8h7mQ",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cc-unauth-rce-QeN8h7mQ"
    }
  ]
}

{
  "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 een kwetsbaarheid verholpen in Cisco Identity Services Engine.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheid bevindt zich in de RADIUS-instelling van Cisco Identity Services Engine, die kan worden misbruikt door niet-geauthenticeerde externe aanvallers. Deze kwetsbaarheid stelt aanvallers in staat om een logische fout te veroorzaken, wat mogelijk leidt tot een onverwachte herstart van het systeem. Het resultaat van deze exploitatie kan een Denial-of-Service (DoS) situatie zijn, wat de beschikbaarheid van het getroffen systeem be\u00efnvloedt.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Cisco heeft updates uitgebracht om de kwetsbaarheid 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": "Incorrect Comparison",
        "title": "CWE-697"
      }
    ],
    "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-ise-radsupress-dos-8YF3JThh"
      }
    ],
    "title": "Kwetsbaarheid verholpen in Cisco Identity Services Engine",
    "tracking": {
      "current_release_date": "2025-11-06T12:36:51.591695Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2025-0354",
      "initial_release_date": "2025-11-06T12:36:51.591695Z",
      "revision_history": [
        {
          "date": "2025-11-06T12:36:51.591695Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "Identity Services Engine (ISE)"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-20343",
      "cwe": {
        "id": "CWE-697",
        "name": "Incorrect Comparison"
      },
      "notes": [
        {
          "category": "other",
          "text": "Incorrect Comparison",
          "title": "CWE-697"
        },
        {
          "category": "description",
          "text": "A vulnerability in the RADIUS setting of Cisco Identity Services Engine (ISE) allows unauthenticated remote attackers to exploit a logic error, potentially causing unexpected system restarts and resulting in a denial of service (DoS).",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-20343 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-20343.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"
          ]
        }
      ],
      "title": "CVE-2025-20343"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2025-20343"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-697"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-05T17:15:37Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability in the RADIUS setting Reject RADIUS requests from clients with repeated failures on Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause Cisco ISE to restart unexpectedly.\n\nThis vulnerability is due to a logic error when processing a RADIUS access request for a MAC address that is already a rejected endpoint. An attacker could exploit this vulnerability by sending a specific sequence of multiple crafted RADIUS access request messages to Cisco ISE. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when Cisco ISE restarts.",
  "id": "GHSA-cfwq-p5hw-9v6p",
  "modified": "2025-11-05T17:48:28Z",
  "published": "2025-11-05T17:48:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20343"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-radsupress-dos-8YF3JThh"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}