{"id":"CVE-2019-1163","aliases":["EUVD-2019-9735","GHSA-c3q8-2rfg-gpqv"],"status":"published","title":"Windows File Signature Security Feature Bypass Vulnerability","description":"A security feature bypass exists when Windows incorrectly validates CAB file signatures. An attacker who successfully exploited this vulnerability could inject code into a CAB file without invalidating the file's signature.\nTo exploit the vulnerability, an attacker could modify a signed CAB file and inject malicious code. The attacker could then convince a target user to execute the file.\nThe update addresses the vulnerability by correcting how Windows validates file signatures.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01485,"percentile":0.74194,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-354"],"published":"2019-08-14T20:55:03Z","modified":"2026-06-17T02:27:58Z","products":[{"vendor":"microsoft","product":"windows 10 version 1507"},{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1703"},{"vendor":"microsoft","product":"windows 10 version 1709"},{"vendor":"microsoft","product":"windows 10 version 1709 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1803"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 1903 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for arm64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for x64-based systems"},{"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, version 1803  (server core installation)"},{"vendor":"microsoft","product":"windows server, version 1903 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1163","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-1163"},{"url":"https://github.com/advisories/GHSA-c3q8-2rfg-gpqv"}],"sources":{"cve":[{"id":"CVE-2019-1163","title":"Windows File Signature Security Feature Bypass Vulnerability","description":"A security feature bypass exists when Windows incorrectly validates CAB file signatures. An attacker who successfully exploited this vulnerability could inject code into a CAB file without invalidating the file's signature.\nTo exploit the vulnerability, an attacker could modify a signed CAB file and inject malicious code. The attacker could then convince a target user to execute the file.\nThe update addresses the vulnerability by correcting how Windows validates file signatures.","status":"published","published":"2019-08-14T20:55:03Z","modified":"2024-08-04T18:06:31.833Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-354"],"updated_at":"2026-11-02T14:20:25.661187Z"}],"euvd":[{"id":"EUVD-2019-9735","description":"A security feature bypass exists when Windows incorrectly validates CAB file signatures. An attacker who successfully exploited this vulnerability could inject code into a CAB file without invalidating the file's signature.\nTo exploit the vulnerability, an attacker could modify a signed CAB file and inject malicious code. The attacker could then convince a target user to execute the file.\nThe update addresses the vulnerability by correcting how Windows validates file signatures.","status":"published","published":"2019-08-14T20:55:03Z","modified":"2024-08-04T18:06:31Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T03:06:59.435978Z"}],"ghsa":[{"id":"GHSA-c3q8-2rfg-gpqv","title":"A security feature bypass exists when Windows incorrectly validates CAB file signatures, aka ...","description":"A security feature bypass exists when Windows incorrectly validates CAB file signatures, aka 'Windows File Signature Security Feature Bypass Vulnerability'.","status":"published","published":"2022-05-24T16:53:30Z","modified":"2024-04-04T01:39:15Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-354"],"updated_at":"2026-11-02T14:56:01.233613Z"}],"nvd":[{"id":"CVE-2019-1163","description":"A security feature bypass exists when Windows incorrectly validates CAB file signatures. An attacker who successfully exploited this vulnerability could inject code into a CAB file without invalidating the file's signature.\nTo exploit the vulnerability, an attacker could modify a signed CAB file and inject malicious code. The attacker could then convince a target user to execute the file.\nThe update addresses the vulnerability by correcting how Windows validates file signatures.","status":"published","published":"2019-08-14T21:15:15.703Z","modified":"2026-06-17T02:27:58.787Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-354"],"updated_at":"2026-11-02T14:05:22.878504Z"}]}}