{"id":"CVE-2026-83849","aliases":["EUVD-2026-99383","GHSA-47h3-vh8j-xrrx"],"status":"published","title":"Windows Hello Information Disclosure Vulnerability","description":"Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0044,"percentile":0.38666,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-13T18:59:53Z","modified":"2026-11-10T20:36:39Z","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-2026-83849","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83849"},{"url":"https://github.com/advisories/GHSA-47h3-vh8j-xrrx"}],"sources":{"cve":[{"id":"CVE-2026-83849","title":"Windows Hello Information Disclosure Vulnerability","description":"Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.","status":"published","published":"2026-10-13T18:59:53.675Z","modified":"2026-11-10T20:36:39.655Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-10T22:18:28.707469Z"}],"euvd":[{"id":"EUVD-2026-99383","description":"Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.","status":"published","published":"2026-10-13T18:59:53Z","modified":"2026-11-10T20:36:39Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T21:23:22.534421Z"}],"ghsa":[{"id":"GHSA-47h3-vh8j-xrrx","title":"Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.","description":"Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.","status":"published","published":"2026-10-13T21:34:58Z","modified":"2026-10-13T21:35:01Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:13:16.842321Z"}],"nvd":[{"id":"CVE-2026-83849","description":"Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.","status":"published","published":"2026-10-13T19:20:33.66Z","modified":"2026-10-29T15:00:57.14Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:58.13117Z"}]}}