CVE-2010-2520: Apple Mac OS X

Medium severity, CVSS 5.1. EPSS: 5.7% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the Ins_IUP function in truetype/ttinterp.c in FreeType before 2.4.0, when TrueType bytecode support is enabled, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted font file.

Affected products

• Apple Mac OS X: before 10.6.5 (fixed in 10.6.5)
• Canonical Ubuntu Linux: version 6.06 only; version 8.04 only; version 9.04 only; version 9.10 only; version 10.04 only
• Debian Debian Linux: version 5.0 only
• FreeType FreeType: before 2.4.0 (fixed in 2.4.0)

Published 2010-08-19. Last modified 2026-06-16.