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CVE-2026-55654

LOW CVSS: 3.7 Published: 2026-06-23 Modified: 2026-08-12

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.

Affected Platforms

Redhat Hardened ImagesOpenbsd OpensshRedhat Enterprise Linux

Weakness Type

CWE-125

References