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Microsoft Security Response CenterCVE-2026-57973

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.

Read the vendor bulletin Get alerts for Windows Subsystem for Linux (WSL2)
6.3CVSS out of 10High severity
Scope

What the vendor says is affected

  • Windows Subsystem for Linux (WSL2)

Versions the vendor lists as fixed

  • 2.7.10
Next step

What the vendor recommends

Release Notes

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-57973View CVSS, KEV, EPSS, and threat context
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