{"id":"CVE-2026-44809","aliases":["EUVD-2026-35743","GHSA-mwwp-2qj3-893w"],"status":"published","title":"Windows Common Log File System Driver Elevation of Privilege Vulnerability","description":"Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/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":"2026-11-10","score":0.00267,"percentile":0.18952,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-06-09T17:06:16Z","modified":"2026-11-10T23:25:07Z","products":[{"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 server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44809","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44809"},{"url":"https://github.com/advisories/GHSA-mwwp-2qj3-893w"}],"sources":{"cve":[{"id":"CVE-2026-44809","title":"Windows Common Log File System Driver Elevation of Privilege Vulnerability","description":"Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-06-09T17:06:16.987Z","modified":"2026-11-10T23:25:07.148Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/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":"2026-11-11T00:50:10.062046Z"}],"euvd":[{"id":"EUVD-2026-35743","description":"Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-06-09T17:06:16Z","modified":"2026-11-10T23:25:07Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-11T00:24:45.332412Z"}],"ghsa":[{"id":"GHSA-mwwp-2qj3-893w","title":"Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate...","description":"Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-06-09T18:30:47Z","modified":"2026-06-09T18:30:48Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:08:41.598643Z"}],"nvd":[{"id":"CVE-2026-44809","description":"Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-06-09T17:17:16.887Z","modified":"2026-07-23T08:10:00.137Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:12:23.109705Z"}]}}