CVE-2021-30680: Apple macOS

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4. A local user may be able to load unsigned kernel extensions.

Affected products

• Apple macOS: before 11.4 (fixed in 11.4)

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