{"id":"CVE-2026-50420","aliases":["EUVD-2026-44070","GHSA-3phq-4j2m-c959"],"status":"published","title":"HTTP.sys Information Disclosure Vulnerability","description":"Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.","severity":{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/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":0.00408,"percentile":0.35552,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-07-14T17:07:35Z","modified":"2026-11-10T22:38:06Z","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-2026-50420","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50420"},{"url":"https://github.com/advisories/GHSA-3phq-4j2m-c959"}],"sources":{"cve":[{"id":"CVE-2026-50420","title":"HTTP.sys Information Disclosure Vulnerability","description":"Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T17:07:35.439Z","modified":"2026-11-10T22:38:06.708Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/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":"2026-11-10T23:49:29.024872Z"}],"euvd":[{"id":"EUVD-2026-44070","description":"Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T17:07:35Z","modified":"2026-11-10T22:38:06Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-11T00:24:47.982419Z"}],"ghsa":[{"id":"GHSA-3phq-4j2m-c959","title":"Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information...","description":"Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T18:32:22Z","modified":"2026-07-14T18:32:27Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:09:29.53235Z"}],"nvd":[{"id":"CVE-2026-50420","description":"Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-07-14T18:17:45.29Z","modified":"2026-10-14T22:10:00.21Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"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":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:29.489525Z"}]}}