CVE-2018-4434: Apple Mac OS X

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 input validation. This issue affected versions prior to macOS Mojave 10.14.2.

Affected products

• Apple Mac OS X: before 10.14.2 (fixed in 10.14.2)

Published 2019-04-03. Last modified 2026-06-17.