{"id":"CVE-2026-119867","aliases":["EUVD-2026-122378","GHSA-pjcx-jrwv-2rc2"],"status":"published","title":"Windows Installer Security Feature Bypass Vulnerability","description":"Improper verification of cryptographic signature in Windows Installer allows an unauthorized attacker to bypass a security feature over a network.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.00383,"percentile":0.32915,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2026-11-10T18:23:00Z","modified":"2026-11-10T21:33:32Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"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 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119867","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119867"},{"url":"https://github.com/advisories/GHSA-pjcx-jrwv-2rc2"}],"sources":{"cve":[{"id":"CVE-2026-119867","title":"Windows Installer Security Feature Bypass Vulnerability","description":"Improper verification of cryptographic signature in Windows Installer allows an unauthorized attacker to bypass a security feature over a network.","status":"published","published":"2026-11-10T18:23:00.038Z","modified":"2026-11-13T18:11:43.993Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-10T19:39:58.973959Z"}],"euvd":[{"id":"EUVD-2026-122378","description":"Improper verification of cryptographic signature in Windows Installer allows an unauthorized attacker to bypass a security feature over a network.","status":"published","published":"2026-11-10T18:23:00Z","modified":"2026-11-13T18:11:43Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T23:24:34.140893Z"}],"ghsa":[{"id":"GHSA-pjcx-jrwv-2rc2","title":"Improper verification of cryptographic signature in Windows Installer allows an unauthorized...","description":"Improper verification of cryptographic signature in Windows Installer allows an unauthorized attacker to bypass a security feature over a network.","status":"published","published":"2026-11-10T21:33:30Z","modified":"2026-11-10T21:33:32Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-10T21:57:53.692707Z"}],"nvd":[{"id":"CVE-2026-119867","description":"Improper verification of cryptographic signature in Windows Installer allows an unauthorized attacker to bypass a security feature over a network.","status":"published","published":"2026-11-10T19:20:05.553Z","modified":"2026-11-10T20:18:36.153Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-347"],"updated_at":"2026-11-10T22:21:32.984056Z"}]}}