CVE-2019-8576: Apple iPhone OS

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. A local user may be able to cause unexpected system termination or read kernel memory.

Affected products

• Apple iPhone OS: before 12.3 (fixed in 12.3)
• Apple Mac OS X: before 10.14.5 (fixed in 10.14.5)
• Apple tvOS: before 12.3 (fixed in 12.3)
• Apple watchOS: before 5.2.1 (fixed in 5.2.1)

Published 2019-12-18. Last modified 2026-06-17.