CVE-2026-55654
LOW
INFO
Priority: 0.02
BB Relevance:
58/100
Published: 2026-06-23
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Network
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
Low
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.
Weakness Classification (1)
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| openbsd | openssh | - |
| redhat | enterprise_linux | 6.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
| redhat | enterprise_linux | 10.0 |
| redhat | hardened_images | - |
References & Advisories (7)
Vendor Advisory
Exploit
Issue Tracking
Vendor Advisory