VulnerabilityAnalyzed
CVE-2026-59998
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 6.5EPSS 0.18%
Does this matter?
Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- EPSS
- 0.18% probability · 8th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-573
- Affected
- openbsd/openssh
- Source
- cve@mitre.org
References
- https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2Release Notes
- https://www.openssh.org/releasenotes.html#10.4p1Release Notes
- https://www.openwall.com/lists/oss-security/2026/07/06/5Mailing List, Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.