CVE-2026-112917

Docker Desktop WSL2 AF_VSOCK isolation bypass via 32-bit socketcall

Published Nov 3, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Description
In Docker Desktop for Windows with the WSL2 backend, an unprivileged Linux container can use 32-bit socketcall to bypass the default seccomp restriction on AF_VSOCK. This can expose host-facing services and Windows files accessible to the logged-in user. The issue affects x86-64 WSL2; LinuxKit-based backends are unaffected. The issue is fully fixed only with Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Docker Desktop 4.98.0 or later running on an older WSL remains affected.

Remediation

Vendor Solution

Upgrade to Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Both are required.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Docker
Docker docker Desktop
Vendors & Products Docker
Docker docker Desktop
Type Values Removed Values Added
Description In Docker Desktop for Windows with the WSL2 backend, an unprivileged Linux container can use 32-bit socketcall to bypass the default seccomp restriction on AF_VSOCK. This can expose host-facing services and Windows files accessible to the logged-in user. The issue affects x86-64 WSL2; LinuxKit-based backends are unaffected. The issue is fully fixed only with Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Docker Desktop 4.98.0 or later running on an older WSL remains affected.
Title Docker Desktop WSL2 AF_VSOCK isolation bypass via 32-bit socketcall
Weaknesses CWE-424
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Docker
Published
Updated
Nov 4, 2026, 1:33 PM
Reserved
Oct 19, 2026, 8:23 PM
Status
Awaiting Analysis
Published
Nov 3, 2026, 7:17 PM
Modified
Nov 6, 2026, 9:40 PM