CVE-2016-4774: Apple iPhone OS

High severity, CVSS 7.1. EPSS: 1% chance of exploitation in the next 30 days.

The kernel in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows attackers to obtain sensitive memory-layout information or cause a denial of service (out-of-bounds read) via a crafted app, a different vulnerability than CVE-2016-4773 and CVE-2016-4776.

Affected products

• Apple iPhone OS: before 10.0 (fixed in 10.0)
• Apple Mac OS X: before 10.12.0 (fixed in 10.12.0)
• Apple tvOS: before 10.0 (fixed in 10.0)
• Apple watchOS: before 3.0 (fixed in 3.0)

Published 2016-09-25. Last modified 2026-06-17.