CVE-2014-8155: GNU Gnutls

Medium severity, CVSS 4.3. EPSS: 1% chance of exploitation in the next 30 days.

GnuTLS before 2.9.10 does not verify the activation and expiration dates of CA certificates, which allows man-in-the-middle attackers to spoof servers via a certificate issued by a CA certificate that is (1) not yet valid or (2) no longer valid.

Affected products

• GNU Gnutls: up to and including 2.9.9

Published 2015-08-14. Last modified 2026-06-17.