CVE-2021-30824: Apple Mac OS X

High severity, CVSS 7.8. EPSS: 1.1% chance of exploitation in the next 30 days.

A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to execute arbitrary code with kernel privileges.

Affected products

• Apple Mac OS X: before 10.15.7 (fixed in 10.15.7); version 10.15.7 only
• Apple macOS: from 11.0, before 11.6.1 (fixed in 11.6.1); from 12.0.0, before 12.0.1 (fixed in 12.0.1)

Published 2021-10-28. Last modified 2026-06-17.