---
cve: "CVE-2026-77179"
severity: "CRITICAL"
cvss: 9.4
epss: "16%"
vendor: "Docker"
kev: false
exploited: false
published: "2026-09-15 14:17:11"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T22:16:32+02:00"
---

# CVE-2026-77179

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path. A malicious guest can replace a parent directory with a symlink, escape the shared workspace, and read or modify arbitrary host files as the VMM user, potentially achieving host code execution.

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- bdfd32bd69bb084959b5f4779310bff21d95bb62 (Commit)

## Referenzen

- <https://docs.docker.com/ai/sandboxes/>
- <https://docs.docker.com/ai/sandboxes/security/isolation/>
- <https://github.com/docker/sbx-releases/releases/tag/v0.42.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-77179) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_