Is CVE-2026-59998 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-59998?

CVE-2026-59998 has a CVSS v3 severity of MEDIUM (4.8).

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CVE-2026-59998

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.