What is CVE-2026-57973?

CVE-2026-57973 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability

Which CVE IDs does CVE-2026-57973 cover?

CVE-2026-57973 covers the following CVE IDs: CVE-2026-57973. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-57973?

CVE-2026-57973 has a CVSS v3 base score of 6.3, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-57973?

CVE-2026-57973 affects 1 product, including: Windows Subsystem for Linux (WSL2).

CVE-2026-57973HighCVSS 6.3

Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

July 17, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-57973 →

📋 Description

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

🎯 Affected products1

Windows Subsystem for Linux (WSL2)

✅ Remediation

KBRelease Notes (Security Update) — fixed build 2.7.10

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57973
patchhttps://learn.microsoft.com/en-us/windows/wsl/install
referencehttps://Release 2.7.10 · microsoft/WSL