# CVE-2026-77179: Docker Sandboxes guest can write arbitrary macOS host files via a symlink in the virtio-fs stored-path fallback

> CVE-2026-77179: Docker Sandboxes guest can write arbitrary macOS host files via a symlink in the virtio-fs stored-path fallback. CVSS 9.4 (CVSS 4.0).

Canonical: https://rewindex.com/cve/CVE-2026-77179
Last updated: 2026-09-16T20:38:33Z

- Published: 2026-09-15 13:32 UTC · Updated: 2026-09-16 20:38 UTC · Assigner: Docker
- CVSS: 9.4 (CVSS 4.0) · Severity: Critical
- EPSS: 0.20%, 10th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-59

## Description

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.

## Affected vendors and products

- Docker: Docker Sandboxes

## Tracked companies

- [Docker](https://rewindex.com/company/docker.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-77179)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-77179)
- [https://docs.docker.com/ai/sandboxes/](https://docs.docker.com/ai/sandboxes/)
- [https://docs.docker.com/ai/sandboxes/security/isolation/](https://docs.docker.com/ai/sandboxes/security/isolation/)
- [https://github.com/docker/sbx-releases/releases/tag/v0.42.0](https://github.com/docker/sbx-releases/releases/tag/v0.42.0)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-77179 · Markdown: https://rewindex.com/cve/CVE-2026-77179.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-77179 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:16:56.140Z