CVE-2010-1802: Apple Libsecurity

Medium severity, CVSS 6.4. EPSS: 0.8% chance of exploitation in the next 30 days.

libsecurity in Apple Mac OS X 10.5.8 and 10.6.4 does not properly perform comparisons to domain-name strings in X.509 certificates, which allows man-in-the-middle attackers to spoof SSL servers via a certificate associated with a similar domain name, as demonstrated by use of a www.example.con certificate to spoof www.example.com.

Affected products

• Apple Libsecurity: any version
• Apple Mac OS X: version 10.5.8 only; version 10.6.4 only
• Apple Mac OS X Server: version 10.5.8 only; version 10.6.4 only

Published 2010-08-25. Last modified 2026-06-16.