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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Docker | Docker Sandboxes | 0.28.0 – < 0.42.0 | 0.42.0 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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HORKimhab/CVE-2026-77179 ★ 0 · Sep 18, 2026
CVE-2026-77179 - Draft or TODO
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- WID-SEC-2026-3480 Docker Sandboxes: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 20, 2026