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major vulnerability· requires attention

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.

Infrastructure

CVE-2026-79994

8.7
High
EPSS 0.14%Patch available

Container escape via symlink race enabling host AF_UNIX socket access

exploited
No known exploitation not in CISA KEV as of our last sync
fix
Patch available see the advisory in the references
likelihood
EPSS 0.14%top 97% of scored CVEs
Published 15 Sept 2026Analysed here 17 Sept 2026CVSS scored by the publisher (CNA)
common questions

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 0.14% 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.

executive summary
technical analysis
affected
Docker Sandboxesdocker/sailorsbx-releases
impact

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.

action required

Immediate action required

affected versions
Docker Docker Sandboxes
  • 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.

cisa ssvc

exploitation
none
automatable
no
technical impact
total

Assessed by CISA 16 Sept 2026 (SSVC 2.0.3).

timeline

  1. 15 Sept 2026Published
  2. 16 Sept 2026CISA SSVC assessment: exploitation none · 1 day later
  3. 16 Sept 2026CVE record last updated · same day later
  4. 17 Sept 2026Analysed by vulneraibility.com · 1 day later
how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
NVDCVE.orgCVE DetailsSource
5 references in the CVE record: 2 patches, 3 links

sources

  • CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
  • NVD: CVSS and CPE data
  • CISA Vulnrichment (ADP): SSVC decision points
  • FIRST EPSS: exploit probability and percentile
  • Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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