CVE-2019-6219: Apple iPhone OS

High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days.

A denial of service issue was addressed with improved validation. This issue is fixed in iOS 12.1.3, macOS Mojave 10.14.3, watchOS 5.1.3. Processing a maliciously crafted message may lead to a denial of service.

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 watchOS: before 5.1.3 (fixed in 5.1.3)

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