CVE-2021-0306: Google Android

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

In addAllPermissions of PermissionManagerService.java, there is a possible permissions bypass when upgrading major Android versions which allows an app to gain the android.permission.ACTIVITY_RECOGNITION permission without user confirmation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-11, Android-8.0, Android-8.1, Android-9, Android-10; Android ID: A-154505240.

Affected products

• Google Android: version 8.0 only; version 8.1 only; version 9.0 only; version 10.0 only; version 11.0 only

Published 2021-01-11. Last modified 2026-06-17.