---
cve: "CVE-2026-42306"
severity: "HIGH"
cvss: 7.2
epss: "0.1%"
vendor: "moby"
kev: false
exploited: false
published: "2026-06-12 19:16:27"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-11-08T23:21:22+01:00"
---

# CVE-2026-42306

> 7.2 HIGH · 🧪 PoC

## Beschreibung

Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to redirect a bind mount target to an arbitrary host path, potentially overwriting host files or causing denial of service. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GitHub_M**
- State: PUBLISHED
- Stand: 2026-06-13 03:25:47
- CNA-CVSS: **7.2** (`CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-367** — Time-of-check Time-of-use (TOCTOU) Race Condition
  The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
- **CWE-61** — UNIX Symbolic Link (Symlink) Following
  The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

## Angriffsmuster (CAPEC)

- [CAPEC-27 — Leveraging Race Conditions via Symbolic Links](https://capec.mitre.org/data/definitions/27.html) _(Severity: High)_
- [CAPEC-29 — Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions](https://capec.mitre.org/data/definitions/29.html) _(Severity: High)_

## Patch verfügbar (OSV)

- dd24a3adc1db4c762fb1b26b35c08ffd936f2d8f (Commit)

## BSI-Hinweise (deutsch)

- [docker: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-1584) — _BSI-Einstufung: mittel_
  Ein lokaler Angreifer kann mehrere Schwachstellen in docker ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, einen Denial-of-Service-Zustand zu verursachen oder Daten zu manipulieren.

## Referenzen

- <https://github.com/moby/moby/security/advisories/GHSA-rg2x-37c3-w2rh>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-42306/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_