Docker Sandboxes guest can write arbitrary macOS host files via a symlink in the virtio-fs stored-path fallback
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.4epss 0.2%
from disclosure to weapon3 days
Published on NVDSep 15
1st PoC+3d
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
Docker · Docker Sandboxespublic PoCs found — 1
githubgithub.com/HORKimhab/CVE-2026-77179★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.