CVE-2020-9997: Apple Mac OS X

Medium severity, CVSS 5.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An information disclosure issue was addressed with improved state management. This issue is fixed in macOS Catalina 10.15.6, watchOS 6.2.8. A malicious application may disclose restricted memory.

Affected products

• Apple Mac OS X: before 10.15.6 (fixed in 10.15.6)
• Apple watchOS: before 6.2.8 (fixed in 6.2.8)

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