CVE-2026-59998CWE-573

sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory

Medium · published July 8, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
7.6
In the wild
Unconfirmed
What it is

sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00180 · 7.6th percentile
Weakness
CWE-573 · Improper Following of Specification by Caller
Published
2026-07-08T00:11Z
EPSS history
Timeline
  • 08 JUL 00:11Z
    sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory
    cvelistv5