Vulnerability-Lookup

GHSA-GXWC-C8RV-5M26

Vulnerability from github – Published: 2026-07-15 18:31 – Updated: 2026-07-15 18:31

Details

The vulnerabilities tracked by CVE-2026-20156 are related to improper restriction of operations within the bounds of a memory buffer that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-119.

Severity

8.1 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-20156"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-15T17:16:47Z",
    "severity": "HIGH"
  },
  "details": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco RoomOS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.\n\nThe vulnerabilities tracked by CVE-2026-20156 are related to improper restriction of operations within the bounds of a memory buffer that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-119.",
  "id": "GHSA-gxwc-c8rv-5m26",
  "modified": "2026-07-15T18:31:55Z",
  "published": "2026-07-15T18:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20156"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-roomos-AqNMbEq"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-20156 (GCVE-0-2026-20156)

Vulnerability from cvelistv5 – Published: 2026-07-15 16:17 – Updated: 2026-07-15 18:05

Title

Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities

Summary

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco RoomOS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20156 are related to improper restriction of operations within the bounds of a memory buffer that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-119.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

cisco

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco RoomOS Software	Affected: RoomOS 10.11.2.2 Affected: RoomOS 10.15.2.2 Affected: RoomOS 11.5.4.6 Affected: RoomOS 11.5.2.4 Affected: RoomOS 10.8.2.5 Affected: RoomOS 10.11.5.2 Affected: RoomOS 10.11.3.0 Affected: RoomOS 10.15.5.3 Affected: RoomOS 10.19.2.2 Affected: RoomOS 11.1.3.1 Affected: RoomOS 10.11.6.0 Affected: RoomOS 10.19.3.0 Affected: RoomOS 10.19.4.2 Affected: RoomOS 10.3.2.4 Affected: RoomOS 10.3.4.0 Affected: RoomOS 10.15.3.0 Affected: RoomOS 11.1.4.1 Affected: RoomOS 11.14.2.3 Affected: RoomOS 11.1.2.4 Affected: RoomOS 10.8.3.1 Affected: RoomOS 11.14.2.1 Affected: RoomOS 10.3.3.0 Affected: RoomOS 10.8.4.0 Affected: RoomOS 10.15.4.1 Affected: RoomOS 10.19.5.6 Affected: RoomOS 10.11.4.1 Affected: RoomOS 11.9.3.1 Affected: RoomOS 11.5.3.3 Affected: RoomOS 10.3.2.0 Affected: RoomOS 11.9.2.4 Affected: RoomOS 11.14.3.0 Affected: RoomOS 11.17.2.2 Affected: RoomOS 11.14.4.0 Affected: RoomOS 10.19 StepUpg Affected: RoomOS 11.17.3.0 Affected: RoomOS 11.20.2.3 Affected: RoomOS 11.14.5.0 Affected: RoomOS 11.17.4.0 Affected: RoomOS 11.20.3.0 Affected: RoomOS 11.23.1.6 Affected: RoomOS 11.23.1.8 Affected: RoomOS 11.24.1.5 Affected: RoomOS 11.24.2.4 Affected: RoomOS 11.24.3.0 Affected: RoomOS 11.24.4.1 Affected: RoomOS 11.27.2.0 Affected: RoomOS 11.28.1.3 Affected: RoomOS 11.27.3.0 Affected: RoomOS 11.31.1.5 Affected: RoomOS 11.27.4.0 Affected: RoomOS 11.32.2.1 Affected: RoomOS 11.33.1.7 Affected: RoomOS 26.0.1.2 Affected: RoomOS 11.34.1.2 Affected: RoomOS 11.32.3.0 Affected: RoomOS 11.27.5.0 Affected: RoomOS 11.32.4.0 Affected: RoomOS 26.1.1.5 Affected: RoomOS 11.35.1.2 Affected: RoomOS 26.2.2.2 Affected: RoomOS 11.32.5.1 Affected: RoomOS 26.4.1.6 Affected: RoomOS 26.4.1.4 Affected: RoomOS 26.3.1.3 Affected: RoomOS 11.36.1.1 Affected: RoomOS 11.37.1.0 Affected: RoomOS 26.5.2.0 Affected: RoomOS 11.38.1.1

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20156",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-15T18:05:33.626503Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-15T18:05:46.644Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco RoomOS Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "RoomOS 10.11.2.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.15.2.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.5.4.6"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.5.2.4"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.8.2.5"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.11.5.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.11.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.15.5.3"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.19.2.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.1.3.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.11.6.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.19.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.19.4.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.3.2.4"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.3.4.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.15.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.1.4.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.14.2.3"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.1.2.4"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.8.3.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.14.2.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.3.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.8.4.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.15.4.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.19.5.6"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.11.4.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.9.3.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.5.3.3"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.3.2.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.9.2.4"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.14.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.17.2.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.14.4.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 10.19 StepUpg"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.17.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.20.2.3"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.14.5.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.17.4.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.20.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.23.1.6"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.23.1.8"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.24.1.5"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.24.2.4"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.24.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.24.4.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.27.2.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.28.1.3"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.27.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.31.1.5"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.27.4.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.32.2.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.33.1.7"
            },
            {
              "status": "affected",
              "version": "RoomOS 26.0.1.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.34.1.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.32.3.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.27.5.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.32.4.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 26.1.1.5"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.35.1.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 26.2.2.2"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.32.5.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 26.4.1.6"
            },
            {
              "status": "affected",
              "version": "RoomOS 26.4.1.4"
            },
            {
              "status": "affected",
              "version": "RoomOS 26.3.1.3"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.36.1.1"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.37.1.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 26.5.2.0"
            },
            {
              "status": "affected",
              "version": "RoomOS 11.38.1.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco RoomOS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20156 are related to improper restriction of operations within the bounds of a memory buffer that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-119."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Improper Restriction of Operations within the Bounds of a Memory Buffer",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T16:17:52.307Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-hardening-roomos-AqNMbEq",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-roomos-AqNMbEq"
        }
      ],
      "source": {
        "advisory": "cisco-sa-hardening-roomos-AqNMbEq",
        "defects": [
          "CSCwu64806"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20156",
    "datePublished": "2026-07-15T16:17:52.307Z",
    "dateReserved": "2025-10-08T11:59:15.387Z",
    "dateUpdated": "2026-07-15T18:05:46.644Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-GXWC-C8RV-5M26

CVE-2026-20156 (GCVE-0-2026-20156)

Tags

Sightings

Nomenclature