CVE-2016-4631: Apple iPhone OS

High severity, CVSS 8.8. EPSS: 4.8% chance of exploitation in the next 30 days.

ImageIO in Apple iOS before 9.3.3, OS X before 10.11.6, tvOS before 9.2.2, and watchOS before 2.2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted TIFF file.

Affected products

• Apple iPhone OS: before 9.3.3 (fixed in 9.3.3)
• Apple Mac OS X: before 10.11.6 (fixed in 10.11.6)
• Apple tvOS: before 9.2.2 (fixed in 9.2.2)
• Apple watchOS: before 2.2.2 (fixed in 2.2.2)

Published 2016-07-22. Last modified 2026-06-17.