CVE-2020-3871: Apple Mac OS X

High severity, CVSS 7.8. EPSS: 1.3% chance of exploitation in the next 30 days.

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.3. An application may be able to execute arbitrary code with kernel privileges.

Affected products

• Apple Mac OS X: before 10.15.3 (fixed in 10.15.3)

Published 2020-02-27. Last modified 2026-06-17.