{"cve":"CVE-2009-5138","nvd":{"published":"2014-03-07T00:10:53.323","modified":"2026-06-16T23:15:09.203","status":"Modified","description":"GnuTLS before 2.7.6, when the GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT flag is not enabled, treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates, a different vulnerability than CVE-2014-1959.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://article.gmane.org/gmane.comp.security.oss.general/12223","http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00000.html","http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00001.html","http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00003.html","http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00020.html"],"products":["gnu:gnutls"],"source":"nvd","synced_at":"2026-10-19T20:32:06.812358378+00:00"},"epss":{"cve":"CVE-2009-5138","score":0.01799,"percentile":0.78481,"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."]}