CVE-2026-57973: Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.

mediumpublic exploitCVSS 6.3CVE-2026-57973

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

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 6.3
Published: 2026-07-14
Last updated: 2026-07-20
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-57973

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-579730.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-57973	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

mediumCVE-2026-57973: Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerabilitymsrc

Recent advisories for Time-of-check time-of-use

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-59676: A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in seunshare of selinux poli…nvd · 2026-07-23
highCVE-2026-53411: A time-of-check to time-of-use (TOCTOU) race condition in the installation and uninstallation …nvd · 2026-07-16
highCVE-2026-53410: A time-of-check to time-of-use (TOCTOU) race condition in the installation and uninstallation …nvd · 2026-07-16
unknownCVE-2026-15449: A time-of-check to time-of-use (TOCTOU) flaw in the illumos data-link pseudo-driver (dld) affe…nvd · 2026-07-16
highCVE-2026-48344: Creative Cloud Desktop is affected by a Time-of-check Time-of-use (TOCTOU) Race Condition vuln…nvd · 2026-07-14
highCVE-2026-56648: Time-of-check time-of-use (toctou) race condition in Windows Network File System allows an aut…nvd · 2026-07-14