CVE-2018-4452: Apple Mac OS X

High severity, CVSS 7.8. EPSS: 1.2% chance of exploitation in the next 30 days.

A memory consumption issue was addressed with improved memory handling. This issue is fixed in macOS Mojave 10.14.3, Security Update 2019-001 High Sierra, Security Update 2019-001 Sierra, macOS Mojave 10.14.2, Security Update 2018-003 High Sierra, Security Update 2018-006 Sierra. A malicious application may be able to execute arbitrary code with system privileges.

Affected products

• Apple Mac OS X: from 10.12.6, before 10.14.3 (fixed in 10.14.3); from 10.14.1, before 10.14.2 (fixed in 10.14.2)

Published 2020-10-27. Last modified 2026-06-17.