{"id":"CVE-2026-62722","aliases":["EUVD-2026-56358","GHSA-mh42-pjwv-j78q"],"status":"published","title":"Microsoft Brokering File System Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows Brokering File System 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":0.00333,"percentile":0.2684,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-08-11T17:04:10Z","modified":"2026-10-30T17:19:59Z","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-2026-62722","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62722"},{"url":"https://github.com/advisories/GHSA-mh42-pjwv-j78q"}],"sources":{"cve":[{"id":"CVE-2026-62722","title":"Microsoft Brokering File System Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows Brokering File System allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-08-11T17:04:10.989Z","modified":"2026-10-30T17:19:59.381Z","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-122"],"updated_at":"2026-11-02T14:20:14.999906Z"}],"euvd":[{"id":"EUVD-2026-56358","description":"Heap-based buffer overflow in Windows Brokering File System allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-08-11T17:04:10Z","modified":"2026-10-30T17:19:59Z","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":"2026-11-02T16:59:04.768038Z"}],"ghsa":[{"id":"GHSA-mh42-pjwv-j78q","title":"Heap-based buffer overflow in Windows Bind Filter Driver allows an authorized attacker to elevate...","description":"Heap-based buffer overflow in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-08-11T18:31:15Z","modified":"2026-08-11T18:31:23Z","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-122"],"updated_at":"2026-11-02T15:10:18.748745Z"}],"nvd":[{"id":"CVE-2026-62722","description":"Heap-based buffer overflow in Windows Brokering File System allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-08-11T17:18:23.05Z","modified":"2026-08-17T16:17:08.3Z","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-122"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}