{"id":"CVE-2026-108406","aliases":["EUVD-2026-121984","GHSA-mwf7-64m7-742p"],"status":"published","title":"Windows Network Connection Broker Elevation of Privilege Vulnerability","description":"Use after free in Windows Network Connection Broker 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":0.0027,"percentile":0.19428,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-11-10T18:19:19Z","modified":"2026-11-10T21:32:33Z","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-2026-108406","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108406"},{"url":"https://github.com/advisories/GHSA-mwf7-64m7-742p"}],"sources":{"cve":[{"id":"CVE-2026-108406","title":"Windows Network Connection Broker Elevation of Privilege Vulnerability","description":"Use after free in Windows Network Connection Broker allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T18:19:19.653Z","modified":"2026-11-13T18:08:09.285Z","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":"2026-11-10T19:39:57.855077Z"}],"euvd":[{"id":"EUVD-2026-121984","description":"Use after free in Windows Network Connection Broker allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T18:19:19Z","modified":"2026-11-13T18:08:09Z","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":"2026-11-10T23:24:26.96779Z"}],"ghsa":[{"id":"GHSA-mwf7-64m7-742p","title":"Use after free in Windows Network Connection Broker allows an authorized attacker to elevate...","description":"Use after free in Windows Network Connection Broker allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T21:32:26Z","modified":"2026-11-10T21:32:33Z","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":"2026-11-10T21:57:48.570264Z"}],"nvd":[{"id":"CVE-2026-108406","description":"Use after free in Windows Network Connection Broker allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-11-10T19:18:09.523Z","modified":"2026-11-10T21:17:55.21Z","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":"2026-11-11T00:21:53.860815Z"}]}}