{"id":"CVE-2026-122166","aliases":["EUVD-2026-122489","GHSA-w9qq-g58p-8vm5"],"status":"published","title":"Windows Remote Desktop Services Elevation of Privilege Vulnerability","description":"Stack-based buffer overflow in Windows Remote Desktop Services 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"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-11-10T18:24:04Z","modified":"2026-11-10T21:33:52Z","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-2026-122166","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122166"},{"url":"https://github.com/advisories/GHSA-w9qq-g58p-8vm5"}],"sources":{"cve":[{"id":"CVE-2026-122166","title":"Windows Remote Desktop Services Elevation of Privilege Vulnerability","description":"Stack-based buffer overflow in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T18:24:04.583Z","modified":"2026-11-10T19:44:20.14Z","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-121"],"updated_at":"2026-11-10T19:39:58.973959Z"}],"euvd":[{"id":"EUVD-2026-122489","description":"Stack-based buffer overflow in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T18:24:04Z","modified":"2026-11-10T19:44:20Z","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":"2026-11-10T19:22:07.605308Z"}],"ghsa":[{"id":"GHSA-w9qq-g58p-8vm5","title":"Stack-based buffer overflow in Windows Remote Desktop Services allows an authorized attacker to...","description":"Stack-based buffer overflow in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T21:33:46Z","modified":"2026-11-10T21:33:52Z","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-121"],"updated_at":"2026-11-10T21:57:54.561479Z"}],"nvd":[{"id":"CVE-2026-122166","description":"Stack-based buffer overflow in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T19:20:33.533Z","modified":"2026-11-10T19:20:33.65Z","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":"primary"}],"cwes":["CWE-121"],"updated_at":"2026-11-10T22:21:33.392456Z"}]}}