CVE-2021-0978: Google Android

Low severity, CVSS 3.3. EPSS: 0.1% chance of exploitation in the next 30 days.

In getSerialForPackage of DeviceIdentifiersPolicyService.java, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-192587406

Affected products

• Google Android: version 12.0 only

Published 2021-12-15. Last modified 2026-06-17.