CVE-2014-1959: GNU Gnutls

Medium severity, CVSS 5.8. EPSS: 3.4% chance of exploitation in the next 30 days.

lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 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.

Affected products

• GNU Gnutls: up to and including 3.1.20; version 3.1.0 only; version 3.1.1 only; version 3.1.2 only; version 3.1.3 only; version 3.1.4 only; …

Published 2014-03-07. Last modified 2026-06-17.