{"id":"CVE-2026-113844","aliases":["EUVD-2026-121958","GHSA-w4pp-f9p7-hqv2"],"status":"published","title":"Windows NTFS Tampering Vulnerability","description":"Improper access control in Windows NTFS allows an authorized attacker to perform tampering locally.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.00351,"percentile":0.29236,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-11-10T18:19:05Z","modified":"2026-11-10T21:32:50Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"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 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"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-2026-113844","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113844"},{"url":"https://github.com/advisories/GHSA-w4pp-f9p7-hqv2"}],"sources":{"cve":[{"id":"CVE-2026-113844","title":"Windows NTFS Tampering Vulnerability","description":"Improper access control in Windows NTFS allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-11-10T18:19:05.65Z","modified":"2026-11-13T18:07:54.402Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-10T19:39:58.44836Z"}],"euvd":[{"id":"EUVD-2026-121958","description":"Improper access control in Windows NTFS allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-11-10T18:19:05Z","modified":"2026-11-13T18:07:54Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T23:24:33.201322Z"}],"ghsa":[{"id":"GHSA-w4pp-f9p7-hqv2","title":"Improper access control in Windows NTFS allows an authorized attacker to perform tampering locally.","description":"Improper access control in Windows NTFS allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-11-10T21:32:49Z","modified":"2026-11-10T21:32:50Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-10T21:57:50.285633Z"}],"nvd":[{"id":"CVE-2026-113844","description":"Improper access control in Windows NTFS allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-11-10T19:19:05.547Z","modified":"2026-11-10T20:17:58.913Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-10T22:21:32.984056Z"}]}}