High MSRC-CVE-2026-57973 1 CVE

Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability

Published Jul 14, 2026 · Updated Jul 14, 2026

Vendor: Microsoft

Summary

Impact: Tampering. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

Security updates
2.7.10 — https://Release 2.7.10 · microsoft/WSL

Vulnerabilities 1

Medium 6.3

CVE-2026-57973 Public exploit

Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.

Microsoft Windows Subsystem for Linux (WSL2) Linux Windows

Jul 14, 2026

Revision history

2026-07-14 #1
Information published.

References

CVE-2026-57973 Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57973
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss