CVE-2026-77179

9.4 criticalEPSS 0.2%

Critical (9.4). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

9.4 critical

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-31)
CWE: CWE-59
Published: 2026-09-15
Modified: 2026-09-16
Record from: the NVD, synced 2026-10-19

References

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

Check your stack JSON