CVE-2010-0525: Apple Mac OS X

Medium severity, CVSS 5.0. EPSS: 1% chance of exploitation in the next 30 days.

Mail in Apple Mac OS X before 10.6.3 does not properly enforce the key usage extension during processing of a keychain that specifies multiple certificates for an e-mail recipient, which might make it easier for remote attackers to obtain sensitive information via a brute-force attack on a weakly encrypted e-mail message.

Affected products

• Apple Mac OS X: up to and including 10.6.2; version 10.5.0 only; version 10.5.1 only; version 10.5.2 only; version 10.5.3 only; version 10.5.4 only; …
• Apple Mac OS X Server: up to and including 10.6.2; version 10.5.0 only; version 10.5.1 only; version 10.5.2 only; version 10.5.3 only; version 10.5.4 only; …

Published 2010-03-30. Last modified 2026-06-16.