CVE-2010-3864: OpenSSL

High severity, CVSS 7.6. EPSS: 22.1% chance of exploitation in the next 30 days.

Multiple race conditions in ssl/t1_lib.c in OpenSSL 0.9.8f through 0.9.8o, 1.0.0, and 1.0.0a, when multi-threading and internal caching are enabled on a TLS server, might allow remote attackers to execute arbitrary code via client data that triggers a heap-based buffer overflow, related to (1) the TLS server name extension and (2) elliptic curve cryptography.

Affected products

• OpenSSL OpenSSL: version 0.9.8f only; version 0.9.8g only; version 0.9.8h only; version 0.9.8i only; version 0.9.8j only; version 0.9.8k only; …

Published 2010-11-17. Last modified 2026-06-16.