Configuration in OpenSSH - CVE-2026-59998
Published: July 15, 2026
Vulnerability identifier: #VU137705
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-59998
CWE-ID: CWE-16
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenSSH
Affected software:
OpenSSH
OpenSSH
Detailed vulnerability description
The issue may allow a remote user to bypass implemented security restrictions.
The issue exists due to the the application has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory. A remote user can bypass implemented security restriction.
How to mitigate CVE-2026-59998
Install updates from vendor's website.