{"id":"CVE-2026-70184","aliases":["EUVD-2026-100129","GHSA-w6gw-x9rc-48qx"],"status":"published","title":"Windows Backup Engine Elevation of Privilege Vulnerability","description":"Improper resolution of path equivalence in Windows Backup Engine 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":0.00421,"percentile":0.36733,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-41"],"published":"2026-10-13T19:01:09Z","modified":"2026-11-10T20:43:51Z","products":[{"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_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"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70184","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70184"},{"url":"https://github.com/advisories/GHSA-w6gw-x9rc-48qx"}],"sources":{"cve":[{"id":"CVE-2026-70184","title":"Windows Backup Engine Elevation of Privilege Vulnerability","description":"Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:01:09.421Z","modified":"2026-11-10T20:43:51.395Z","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-41"],"updated_at":"2026-11-10T22:18:28.707469Z"}],"euvd":[{"id":"EUVD-2026-100129","description":"Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:01:09Z","modified":"2026-11-10T20:43:51Z","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":"2026-11-10T22:23:56.642439Z"}],"ghsa":[{"id":"GHSA-w6gw-x9rc-48qx","title":"Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to...","description":"Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T21:34:12Z","modified":"2026-10-13T21:34:19Z","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-41"],"updated_at":"2026-11-02T15:13:15.111505Z"}],"nvd":[{"id":"CVE-2026-70184","description":"Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:19:32.54Z","modified":"2026-10-28T12:39:01.17Z","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-41"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}