4.8
Medium
CVE-2026-59998 sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenSSH 10.4 | earliest → < 10.4 | 10.4 |
Other CVEs of OpenSSH
The 33 CVEs of OpenSSH →
CVE-2026-123158
sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround for a password…
8.1
High
CVE-2026-106583
In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection
2.5
Low
CVE-2026-106589
In sshd in OpenSSH through 10.6, in certain environments such as QNX 6 and SCO OpenServer 5, sshd-session can…
2.9
Low
CVE-2026-106588
In sshd in OpenSSH through 10.6, use of the macOS 27 (or later) SDK has the side effect of loss of sandboxing, which…
3.1
Low