CVE-2006-4409: Apple Mac OS X

Medium severity, CVSS 5.0. EPSS: 1.5% chance of exploitation in the next 30 days.

The Online Certificate Status Protocol (OCSP) service in the Security Framework in Apple Mac OS X 10.4 through 10.4.8 retrieve certificate revocation lists (CRL) when an HTTP proxy is in use, which could cause the system to accept certificates that have been revoked.

Affected products

• Apple Mac OS X: version 10.4 only; version 10.4.1 only; version 10.4.2 only; version 10.4.3 only; version 10.4.4 only; version 10.4.5 only; …

Published 2006-11-30. Last modified 2026-06-16.