{"id":"CVE-2026-119386","aliases":["EUVD-2026-122318","GHSA-xjm3-jv86-j3cj"],"status":"published","title":"Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability","description":"Use after free in Windows Resilient File System (ReFS) 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":"2026-11-14","score":0.00307,"percentile":0.23829,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-11-10T18:22:26Z","modified":"2026-11-10T21:33:11Z","products":[{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows 11 version 26h2"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119386","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119386"},{"url":"https://github.com/advisories/GHSA-xjm3-jv86-j3cj"}],"sources":{"cve":[{"id":"CVE-2026-119386","title":"Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability","description":"Use after free in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T18:22:26.99Z","modified":"2026-11-13T18:11:11.658Z","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-416"],"updated_at":"2026-11-10T19:39:58.44836Z"}],"euvd":[{"id":"EUVD-2026-122318","description":"Use after free in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T18:22:26Z","modified":"2026-11-13T18:11:11Z","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":"2026-11-10T23:24:34.630267Z"}],"ghsa":[{"id":"GHSA-xjm3-jv86-j3cj","title":"Use after free in Windows Resilient File System (ReFS) allows an authorized attacker to elevate...","description":"Use after free in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T21:33:10Z","modified":"2026-11-10T21:33:11Z","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-416"],"updated_at":"2026-11-10T21:57:52.038337Z"}],"nvd":[{"id":"CVE-2026-119386","description":"Use after free in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T19:19:52.63Z","modified":"2026-11-10T20:18:26.827Z","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-416"],"updated_at":"2026-11-10T22:21:32.984056Z"}]}}