CVE-2016-7444: GNU Gnutls

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.

Affected products

• GNU Gnutls: up to and including 3.4.14; version 3.5.0 only; version 3.5.1 only; version 3.5.2 only; version 3.5.3 only

Published 2016-09-27. Last modified 2026-06-17.