{"id":"CVE-2009-3765","aliases":["EUVD-2009-3737","GHSA-fp73-6h6h-9v4h"],"status":"published","title":"mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\\0'...","description":"mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","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":"2026-11-09","score":0.01051,"percentile":0.64517,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-310"],"published":"2009-10-23T19:00:00Z","modified":"2026-06-16T23:12:18Z","products":[{"vendor":"mutt","product":"mutt"}],"references":[{"url":"http://marc.info/?l=oss-security\u0026m=125369675820512\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://dev.mutt.org/trac/changeset/6016:dc09812e63a3/mutt_ssl.c","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred"]},{"url":"http://marc.info/?l=oss-security\u0026m=125198917018936\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-3765"},{"url":"https://github.com/advisories/GHSA-fp73-6h6h-9v4h"}],"sources":{"cve":[{"id":"CVE-2009-3765","description":"mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","status":"published","published":"2009-10-23T19:00:00Z","modified":"2024-09-16T20:22:26.58Z","updated_at":"2026-11-02T14:33:24.10565Z"}],"euvd":[{"id":"EUVD-2009-3737","description":"mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","status":"published","published":"2009-10-23T19:00:00Z","modified":"2024-09-16T20:22:26Z","updated_at":"2026-11-03T00:55:14.527578Z"}],"ghsa":[{"id":"GHSA-fp73-6h6h-9v4h","title":"mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\\0'...","description":"mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","status":"published","published":"2022-05-02T03:48:23Z","modified":"2023-01-31T05:08:52Z","updated_at":"2026-11-02T14:49:28.053794Z"}],"nvd":[{"id":"CVE-2009-3765","description":"mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","status":"published","published":"2009-10-23T19:30:00.203Z","modified":"2026-06-16T23:12:18.997Z","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-310"],"updated_at":"2026-11-02T14:01:37.004244Z"}]}}