CVE-2019-6221: Apple iPhone OS

High severity, CVSS 7.8. EPSS: 0.9% 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 12.1.3, macOS Mojave 10.14.3, iTunes 12.9.3 for Windows. A malicious application may be able to elevate privileges.

Affected products

• Apple iPhone OS: before 12.1.3 (fixed in 12.1.3)
• Apple iTunes: before 12.9.3 (fixed in 12.9.3)
• Apple Mac OS X: before 10.14.3 (fixed in 10.14.3)

Published 2019-03-05. Last modified 2026-06-17.