CVE-2011-3210: OpenSSL

Medium severity, CVSS 5.0. EPSS: 4.6% chance of exploitation in the next 30 days.

The ephemeral ECDH ciphersuite functionality in OpenSSL 0.9.8 through 0.9.8r and 1.0.x before 1.0.0e does not ensure thread safety during processing of handshake messages from clients, which allows remote attackers to cause a denial of service (daemon crash) via out-of-order messages that violate the TLS protocol.

Affected products

• OpenSSL OpenSSL: version 0.9.8 only; version 0.9.8a only; version 0.9.8b only; version 0.9.8c only; version 0.9.8d only; version 0.9.8e only; …

Published 2011-09-22. Last modified 2026-06-16.