{"affected":[{"product":"Windows Subsystem for Linux (WSL2)","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"2.7.10","status":"affected","version":"5.0.0.0","versionType":"custom"}]}],"cveId":"CVE-2026-57973","cwes":["CWE-367"],"description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.","epss":{"date":"2026-11-10","percentile":0.12218,"score":0.00217},"exploits":[],"kev":null,"metrics":[{"score":6.3,"severity":"medium","source":"CNA: microsoft","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","version":"3.1"}],"modifiedAt":1794350416154,"publishedAt":1784048980251,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57973"}],"remediation":[{"kind":"fix","source":"CNA: microsoft","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57973"}],"revision":"a6fb19e715cb964754346d96f416a754e219e151214a0530229c2ea9febd744a","sources":[{"modifiedAt":1794350416154,"name":"CNA: microsoft","retrievedAt":1794353218326,"url":"https://www.cve.org/CVERecord?id=CVE-2026-57973"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794353249451,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-57973"}],"ssvc":{"assessedAt":1784087918849,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability","updatedAt":1794353249451}