CVE-2020-27915: Apple Mac OS X

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

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. A malicious application may be able to execute arbitrary code with system privileges.

Affected products

• Apple Mac OS X: before 11.0.1 (fixed in 11.0.1); before 11.1.0 (fixed in 11.1.0)

Published 2021-04-02. Last modified 2026-06-17.