{"id":"CVE-2002-0862","aliases":["EUVD-2002-0854","GHSA-8hcj-p8xh-2p28"],"status":"published","title":"The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust...","description":"The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.1576,"percentile":0.96888,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-295"],"published":"2002-09-10T04:00:00Z","modified":"2026-06-16T21:58:17Z","exploits":[{"source":"exploitdb","id":"EDB-21692","title":"Microsoft Internet Explorer 5/6 / Konqueror 2.2.2/3.0 / Weblogic Server 5/6/7 - Invalid X.509 Certificate Chain","type":"remote","platform":"windows","date":"2002-08-06","verified":true,"url":"https://www.exploit-db.com/exploits/21692"}],"products":[{"vendor":"microsoft","product":"internet_explorer"},{"vendor":"microsoft","product":"office"},{"vendor":"microsoft","product":"outlook_express"},{"vendor":"microsoft","product":"windows_2000"},{"vendor":"microsoft","product":"windows_98"},{"vendor":"microsoft","product":"windows_98se"},{"vendor":"microsoft","product":"windows_me"},{"vendor":"microsoft","product":"windows_nt"},{"vendor":"microsoft","product":"windows_xp"}],"references":[{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1332","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","Broken Link"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102918200405308\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Mailing List"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1056","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","Broken Link"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102866120821995\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Mailing List"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/9776","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102976967730450\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Mailing List"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2671","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","Broken Link"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-050","tags":["vendor-advisory","x_refsource_MS","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-0862"},{"url":"https://github.com/advisories/GHSA-8hcj-p8xh-2p28"}],"sources":{"cve":[{"id":"CVE-2002-0862","description":"The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.","status":"published","published":"2002-09-10T04:00:00Z","modified":"2024-08-08T03:03:49.357Z","updated_at":"2026-11-02T14:33:55.303902Z"}],"euvd":[{"id":"EUVD-2002-0854","description":"The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.","status":"published","published":"2002-09-10T04:00:00Z","modified":"2024-08-08T03:03:49Z","updated_at":"2026-11-03T01:14:58.693075Z"}],"ghsa":[{"id":"GHSA-8hcj-p8xh-2p28","title":"The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust...","description":"The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.","status":"published","published":"2022-04-30T18:20:05Z","modified":"2026-03-14T05:05:52Z","cwes":["CWE-295"],"updated_at":"2026-11-02T15:06:36.943588Z"}],"nvd":[{"id":"CVE-2002-0862","description":"The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.","status":"published","published":"2002-10-04T04:00:00Z","modified":"2026-06-16T21:58:17.14Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:00:42.827505Z"}]}}