---
cve: "CVE-2026-63125"
severity: "CRITICAL"
cvss: 9.9
epss: "56.2%"
vendor: "lxc"
kev: false
exploited: false
published: "2026-08-21 15:16:46"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T13:20:48+02:00"
---

# CVE-2026-63125

> 9.9 CRITICAL · 🧪 PoC

## Beschreibung

Incus is a system container and virtual machine manager. Prior to version 7.3.0, an unprivileged, project-confined Incus user (a non-admin TLS/RBAC identity with `can_create_images` and `can_create_instances`) can execute arbitrary code as root on the host. A crafted image ships `backup.yaml` as a symlink to a host file. When the root daemon writes the instance's backup file, it follows the symlink. Version 7.3.0 patches the issue.

## CVSS-Vektor

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

| 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 | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 90429bf42f08b41c091e799d81465ff24b5cee2b (Commit)

## Referenzen

- <https://github.com/lxc/incus/security/advisories/GHSA-6rqx-22hc-qm36>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-63125) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_