CVE-2021-0319: Google Android

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

In checkCallerIsSystemOr of CompanionDeviceManagerService.java, there is a possible way to get a nearby Bluetooth device's MAC address without appropriate permissions due to a permissions bypass. This could lead to local escalation of privilege that grants access to nearby MAC addresses, with User execution privileges needed. User interaction is needed for exploitation. Product: Android; Versions: Android-8.0, Android-8.1, Android-9, Android-10, Android-11; Android ID: A-167244818.

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.