CVE-2026-59998

Public on 2026-07-08
Modified on 2026-07-10
Description
sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.
Severity
Medium severity
Medium
See what this means
CVSS v3 Base Score
4.8
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core openssh Pending Fix
Amazon Linux 2023 openssh Pending Fix

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD CVSSv3 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N