CVE-2022-26756: Apple Mac OS X

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Security Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. An 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 11.6.6 (fixed in 11.6.6); from 12.0, before 12.4 (fixed in 12.4)

Published 2022-05-26. Last modified 2026-06-17.