CVE-2026-55654

Full vulnerability record from the local CVENow database.
Description

A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the availability of the SSH service.
Severity
LOW
CVSS score
3.7 (v3.1)
Vulnerability status
Modified
Source identifier
[email protected]
Published
2026-06-23 04:17:40.587000
Last modified
2026-11-06 19:17:52.103000
View original CVE JSON
{
  "id": "CVE-2026-55654",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-23T04:17:40.587",
  "lastModified": "2026-11-06T19:17:52.103",
  "vulnStatus": "Modified",
  "cveTags": [],
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    }
  ],
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          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
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}