{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-85879","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","state":"PUBLISHED","assignerShortName":"microsoft","dateReserved":"2026-09-04T18:18:19.325Z","datePublished":"2026-10-13T19:01:03.768Z","dateUpdated":"2026-10-30T19:11:11.435Z"},"containers":{"cna":{"title":"Windows Subsystem for Linux Elevation of Privilege Vulnerability","datePublic":"2026-10-13T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:windows_subsystem_for_linux:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0.0.0","versionEndExcluding":"2.7.10"}]}]}],"affected":[{"vendor":"Microsoft","product":"Windows Subsystem for Linux (WSL2)","versions":[{"version":"5.0.0.0","lessThan":"2.7.10","versionType":"custom","status":"affected"}]}],"descriptions":[{"value":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.","lang":"en-US"}],"problemTypes":[{"descriptions":[{"description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en-US","type":"CWE","cweId":"CWE-367"}]}],"providerMetadata":{"orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft","dateUpdated":"2026-10-30T19:11:11.435Z"},"references":[{"name":"Windows Subsystem for Linux Elevation of Privilege Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85879"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"HIGH","baseScore":7,"vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-11T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-85879"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-14T03:58:41.200Z"}}]}}