{"schema":"threatline.record/2","record":{"id":"CVE-2026-85879","aliases":[],"summary":"Windows Subsystem for Linux Elevation of Privilege Vulnerability","details":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.","categories":["Operating systems"],"product":"Windows Subsystem for Linux (WSL2)","vendor":"Microsoft","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-85879","source_modified_at":"2026-10-23T22:28:56.965Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Subsystem for Linux (WSL2)","vendor":"Microsoft","versions":[{"version":"5.0.0.0","lessThan":"2.7.10","versionType":"custom","status":"affected"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-85879","source_modified_at":"2026-10-23T22:28:56.965Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Subsystem for Linux (WSL2)","ecosystem":null},"version":"2.7.10","basis":"first unaffected version stated in the CVE record"}],"cvss":7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00193,"percentile":0.08502,"score_date":"2026-10-23"},"published_at":"2026-10-13T19:01:03.768Z","modified_at":"2026-10-23T22:28:56.965Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-85879","fetched_at":"2026-10-24T00:31:04.721601Z","source_modified_at":"2026-10-23T22:28:56.965Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-85879","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85879","tags":["vendor-advisory","patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-11T00:00:00+00:00"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T22:28:56.965Z","content_hash":"4405b152a869d470f79389ffdf57c4037c8259d4bfcbff08ce3876ba4ef2648c"}}