{"id":"CVE-2026-96858","aliases":["EUVD-2026-100237","GHSA-c968-g528-cmrv"],"status":"published","title":"Windows Security Account Manager Tampering Vulnerability","description":"Missing authentication for critical function in Windows Security Account Manager allows an authorized attacker to perform tampering locally.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00462,"percentile":0.40485,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2026-10-13T19:01:19Z","modified":"2026-11-10T20:44:59Z","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 server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"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_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96858","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96858"},{"url":"https://github.com/advisories/GHSA-c968-g528-cmrv"}],"sources":{"cve":[{"id":"CVE-2026-96858","title":"Windows Security Account Manager Tampering Vulnerability","description":"Missing authentication for critical function in Windows Security Account Manager allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-10-13T19:01:19.015Z","modified":"2026-11-10T20:44:59.011Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-10T22:18:30.298108Z"}],"euvd":[{"id":"EUVD-2026-100237","description":"Missing authentication for critical function in Windows Security Account Manager allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-10-13T19:01:19Z","modified":"2026-11-10T20:44:59Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:56.272923Z"}],"ghsa":[{"id":"GHSA-c968-g528-cmrv","title":"Missing authentication for critical function in Windows Security Account Manager allows an...","description":"Missing authentication for critical function in Windows Security Account Manager allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-10-13T21:37:03Z","modified":"2026-10-13T21:37:09Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:13:19.647865Z"}],"nvd":[{"id":"CVE-2026-96858","description":"Missing authentication for critical function in Windows Security Account Manager allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-10-13T19:21:59.657Z","modified":"2026-10-28T19:36:42.063Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:12:58.630796Z"}]}}