CVE-2011-0226: Apple iPhone OS

High severity, CVSS 9.3. EPSS: 6.6% chance of exploitation in the next 30 days.

Integer signedness error in psaux/t1decode.c in FreeType before 2.4.6, as used in CoreGraphics in Apple iOS before 4.2.9 and 4.3.x before 4.3.4 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted Type 1 font in a PDF document, as exploited in the wild in July 2011.

Affected products

• Apple iPhone OS: up to and including 4.2.8; version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.1.0 only; version 1.1.1 only; …
• FreeType FreeType: up to and including 2.4.5; version 2.2.1 only; version 2.2.10 only; version 2.3.0 only; version 2.3.1 only; version 2.3.2 only; …

Published 2011-07-19. Last modified 2026-06-16.