CVE-2020-9817: Apple Mac OS X

High severity, CVSS 7.8. EPSS: 1.1% chance of exploitation in the next 30 days.

A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in macOS Catalina 10.15.5. A malicious application may be able to gain root privileges.

Affected products

• Apple Mac OS X: from 10.13, before 10.13.6 (fixed in 10.13.6); from 10.14, before 10.14.6 (fixed in 10.14.6); from 10.15, before 10.15.5 (fixed in 10.15.5); version 10.13.6 only; version 10.14.6 only

Published 2020-06-09. Last modified 2026-06-17.