CVE-2019-6231: Apple iPhone OS

Medium severity, CVSS 5.5. EPSS: 1.5% 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, tvOS 12.1.2, watchOS 5.1.3. A malicious application may be able to read restricted memory.

Affected products

• Apple iPhone OS: before 12.1.3 (fixed in 12.1.3)
• Apple Mac OS X: before 10.14.3 (fixed in 10.14.3)
• Apple tvOS: before 12.1.2 (fixed in 12.1.2)
• Apple watchOS: before 5.1.3 (fixed in 5.1.3)

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