CVE-2006-4407: Apple Mac OS X

Medium severity, CVSS 5.0. EPSS: 1.7% chance of exploitation in the next 30 days.

The Security Framework in Apple Mac OS X 10.3.x up to 10.3.9 does not properly prioritize encryption ciphers when negotiating the strongest shared cipher, which causes Secure Transport to user a weaker cipher that makes it easier for remote attackers to decrypt traffic.

Affected products

• Apple Mac OS X: version 10.3 only; version 10.3.1 only; version 10.3.2 only; version 10.3.3 only; version 10.3.4 only; version 10.3.5 only; …

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