CVE-2026-59998
Published: July 9, 2026Last modified: July 11, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | LOW |
| Integrity impact | LOW |
| Availability impact | NONE |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | openssh | Vulnerable (9.1_p1-r3) |
| 25 LTS | openssh | Vulnerable (10.0_p1-r7) | |
| Stream | openssh | Vulnerable (9.3_p1-r7) | |
| Hardened Containers | 23 LTS | openssh | Vulnerable (9.1_p1-r3) |
| 25 LTS | openssh | Vulnerable (10.0_p1-r7) | |
| Stream | openssh | Vulnerable (9.3_p1-r7) |