CVE-2011-4576: OpenSSL

Medium severity, CVSS 5.0. EPSS: 15.6% chance of exploitation in the next 30 days.

The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer.

Affected products

• OpenSSL OpenSSL: up to and including 0.9.8r; version 0.9.1c only; version 0.9.2b only; version 0.9.4 only; version 0.9.5 only; version 0.9.5a only; …

Published 2012-01-06. Last modified 2026-06-16.