CVE-2009-0012: Apple Mac OS X

High severity, CVSS 10.0. EPSS: 5.4% chance of exploitation in the next 30 days.

Heap-based buffer overflow in CoreText in Apple Mac OS X 10.5.6 allows remote attackers to execute arbitrary code via a crafted Unicode string.

Affected products

• Apple Mac OS X: version 10.5.6 only
• Apple Mac OS X Server: version 10.5.6 only

Published 2009-02-13. Last modified 2026-06-16.