CVE-2021-30908: Apple macOS

Low severity, CVSS 3.3. EPSS: 0.3% chance of exploitation in the next 30 days.

An authentication issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.0.1, macOS Big Sur 11.6.1. A local attacker may be able to view the previous logged-in user’s desktop from the fast user switching screen.

Affected products

• Apple macOS: from 11.0, before 11.6.1 (fixed in 11.6.1); version 12.0 only

Published 2021-08-24. Last modified 2026-06-17.