cvedb.io
CVE-2026-55654
LOW · CVSS 3.7
EPSS exploitation probability: 0%
Published 2026-06-23T04:17:40.587 · Last modified 2026-06-25T16:59:23.647

Summary

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 products

openbsd — openssh

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.