CVE-2021-0331: Google Android

High severity, CVSS 7.3. EPSS: 0.3% chance of exploitation in the next 30 days.

In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack due to an insecure default value. This could lead to local escalation of privilege and notification access with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.1Android ID: A-170731783

Affected products

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

Published 2021-02-10. Last modified 2026-06-17.