CVE-2020-9929: Apple Mac OS X

High severity, CVSS 7.1. EPSS: 0.3% 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 10.15.6. A local user may be able to cause unexpected system termination or read kernel memory.

Affected products

• Apple Mac OS X: before 10.15.6 (fixed in 10.15.6)

Published 2020-10-22. Last modified 2026-06-17.