CVE-2014-3466: Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x...

Security readout for executives and security teams

CVE-2014-3466 is a GnuTLS flaw where a malicious TLS server can send an overly long session ID and corrupt memory in vulnerable clients. The documented impact is denial of service, with possible arbitrary code execution. It matters most where old GnuTLS-based software connects to untrusted or attacker-controlled servers. Exposure is most likely on legacy Linux or appliance environments still running vulnerable GnuTLS package versions. Client-side software using the vulnerable library is the primary concern when it initiates TLS connections to servers outside organizational control. Treat as a high-priority legacy dependency issue, especially for internet-facing client workloads and old Linux estates. It is not KEV-listed in the provided bundle, but memory corruption with possible code execution justifies prompt remediation where vulnerable versions remain. Mitigation focus: Upgrade GnuTLS to 3.1.25, 3.2.15, 3.3.4, or later supported vendor packages.; Apply relevant Debian, Red Hat, Ubuntu, SUSE, IBM, Novell, or Oracle advisories where applicable.; Prioritize systems that make outbound TLS connections to untrusted servers..

Prepared

Jun 14, 2026, 14:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.