{"cve":"CVE-2009-2409","nvd":{"published":"2009-07-30T19:30:00.343","modified":"2026-06-16T23:09:23.170","status":"Modified","description":"The Network Security Services (NSS) library before 3.12.3, as used in Firefox; GnuTLS before 2.6.4 and 2.7.4; OpenSSL 0.9.8 through 0.9.8k; and other products support MD2 with X.509 certificates, which might allow remote attackers to spoof certificates by using MD2 design flaws to generate a hash collision in less than brute-force time.  NOTE: the scope of this issue is currently limited because the amount of computation required is still large.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-295"],"references":["http://java.sun.com/j2se/1.5.0/ReleaseNotes.html","http://java.sun.com/javase/6/webnotes/6u17.html","http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html","http://secunia.com/advisories/36139","http://secunia.com/advisories/36157"],"products":["gnu:gnutls","mozilla:network_security_services","openssl:openssl"],"source":"nvd","synced_at":"2026-10-19T19:54:07.895733559+00:00"},"epss":{"cve":"CVE-2009-2409","score":0.0427,"percentile":0.9109,"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."]}