---
cve: "CVE-2026-59998"
severity: "MEDIUM"
cvss: 4.8
epss: "18%"
vendor: "OpenBSD"
kev: false
exploited: false
published: "2026-07-08 01:16:28"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-04T00:31:10+02:00"
---

# CVE-2026-59998

> 4.8 MEDIUM

## Beschreibung

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-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- e8dd756725e8800fcd0b3fd71ee6b4382d1e8fab (Commit)

## Referenzen

- <https://www.openwall.com/lists/oss-security/2026/07/06/5>
- <https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2>
- <https://www.openssh.org/releasenotes.html#10.4p1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-59998) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_