{"cve":"CVE-2009-2408","nvd":{"published":"2009-07-30T19:30:00.313","modified":"2026-06-16T23:09:22.990","status":"Modified","description":"Mozilla Network Security Services (NSS) before 3.12.3, Firefox before 3.0.13, Thunderbird before 2.0.0.23, and SeaMonkey before 1.1.18 do 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. NOTE: this was originally reported for Firefox before 3.5.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9},"cwes":["CWE-295"],"references":["http://isc.sans.org/diary.html?storyid=7003","http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html","http://marc.info/?l=oss-security&m=125198917018936&w=2","http://osvdb.org/56723","http://secunia.com/advisories/36088"],"products":["canonical:ubuntu_linux","debian:debian_linux","mozilla:firefox","mozilla:network_security_services","mozilla:seamonkey","mozilla:thunderbird","opensuse:opensuse","suse:linux_enterprise","suse:linux_enterprise_server"],"source":"nvd","synced_at":"2026-10-19T19:54:07.895733559+00:00"},"epss":{"cve":"CVE-2009-2408","score":0.05741,"percentile":0.93059,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}