{"id":"CVE-2026-83834","aliases":["EUVD-2026-99377","GHSA-m3qw-3v2g-89wc"],"status":"published","title":"Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability","description":"Use after free in Windows Kernel-Mode Drivers 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":0.00291,"percentile":0.21936,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-367","CWE-416"],"published":"2026-10-13T18:59:53Z","modified":"2026-11-10T20:36:36Z","exploits":[{"source":"pocgithub","id":"wkpwn/CVE-2026-83834","title":"wkpwn/CVE-2026-83834","date":"2026-10-14","url":"https://github.com/wkpwn/CVE-2026-83834"}],"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)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_11_26h2"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83834","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83834"},{"url":"https://github.com/advisories/GHSA-m3qw-3v2g-89wc"}],"sources":{"cve":[{"id":"CVE-2026-83834","title":"Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability","description":"Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T18:59:53.144Z","modified":"2026-11-10T20:36:36.508Z","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","CWE-367"],"updated_at":"2026-11-10T22:18:28.707469Z"}],"euvd":[{"id":"EUVD-2026-99377","description":"Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T18:59:53Z","modified":"2026-11-10T20:36:36Z","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":"2026-11-10T21:23:22.534421Z"}],"ghsa":[{"id":"GHSA-m3qw-3v2g-89wc","title":"Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges...","description":"Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T21:34:55Z","modified":"2026-10-13T21:35:04Z","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":"2026-11-02T15:13:17.40783Z"}],"nvd":[{"id":"CVE-2026-83834","description":"Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:20:31.227Z","modified":"2026-10-27T20:10:45.653Z","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","CWE-416"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}