---
cve: "CVE-2025-5689"
severity: "HIGH"
cvss: 8.5
epss: "26%"
vendor: "Canonical"
kev: false
exploited: false
published: "2025-06-16 12:15:19"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T09:35:58+02:00"
---

# CVE-2025-5689

> 8.5 HIGH · 🧪 PoC

## Beschreibung

A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- f97279aeb2887ef885d099c3c6b2487fc8f24ab4 (Commit)

## Referenzen

- <https://github.com/ubuntu/authd/security/advisories/GHSA-g8qw-mgjx-rwjr>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-5689) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_