{"id":"CVE-2026-85879","aliases":["EUVD-2026-100064","GHSA-7xvg-wj2h-x3rp"],"status":"published","title":"Windows Subsystem for Linux Elevation of Privilege Vulnerability","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":7,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00214,"percentile":0.11883,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-367"],"published":"2026-10-13T19:01:03Z","modified":"2026-11-10T20:43:13Z","products":[{"vendor":"microsoft","product":"windows subsystem for linux (wsl2)"},{"vendor":"microsoft","product":"windows_subsystem_for_linux"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85879","tags":["vendor-advisory","patch","Patch","Vendor Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85879"},{"url":"https://github.com/advisories/GHSA-7xvg-wj2h-x3rp"}],"sources":{"cve":[{"id":"CVE-2026-85879","title":"Windows Subsystem for Linux Elevation of Privilege Vulnerability","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:01:03.768Z","modified":"2026-11-10T20:43:13.944Z","cvss":[{"version":"3.1","score":7,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-10T22:18:29.471829Z"}],"euvd":[{"id":"EUVD-2026-100064","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:01:03Z","modified":"2026-11-10T20:43:13Z","cvss":[{"version":"3.1","score":7,"vector":"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","level":"high"}],"updated_at":"2026-11-10T22:23:57.125737Z"}],"ghsa":[{"id":"GHSA-7xvg-wj2h-x3rp","title":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an...","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T21:36:12Z","modified":"2026-10-13T21:36:12Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T15:13:18.544547Z"}],"nvd":[{"id":"CVE-2026-85879","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:21:15.073Z","modified":"2026-10-29T15:03:57.737Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:12:58.13117Z"}],"osv":[{"id":"CVE-2026-85879","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:21:15.073Z","modified":"2026-10-31T07:10:22.999378717Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:18.825071Z"}]}}