CVE-2021-30671: Apple Mac OS X

Low severity, CVSS 3.3. EPSS: 0.6% chance of exploitation in the next 30 days.

A validation issue was addressed with improved logic. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina. A malicious application may be able to send unauthorized Apple events to Finder.

Affected products

• Apple Mac OS X: from 10.15, up to and including 10.15.6; version 10.15.7 only
• Apple macOS: from 11.0, before 11.4 (fixed in 11.4)

Published 2021-09-08. Last modified 2026-06-17.