Affects Docker Sandboxes — widely used container tech. Allows guest-to-host AF_UNIX socket access, enabling data exposure or host capability/privilege access across deployments.
CVE-2026-79994
Container escape via symlink race enabling host AF_UNIX socket access
Is CVE-2026-79994 being exploited?
Not confirmed. CVE-2026-79994 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.11% probability of exploitation in the next 30 days.
How severe is CVE-2026-79994?
CVE-2026-79994 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-79994?
Yes. A fix has been recorded for CVE-2026-79994. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-79994 affect?
CVE-2026-79994 affects Docker Sandboxes, docker/sailor, sbx-releases. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-79994?
Upgrade to sbx-releases v0.42.0+ and restrict/monitor AF_UNIX sockets
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Malicious guest can trick host into connecting to arbitrary AF_UNIX sockets outside workspace, exposing data or host-side capabilities and enabling privilege/credential access.
Immediate action required
- affected>= 0.37.0 and < 0.42.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.