CVE-2020-9828: Apple Mac OS X

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.4. A remote attacker may be able to leak sensitive user information.

Affected products

• Apple Mac OS X: before 10.15.4 (fixed in 10.15.4)

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