CVE-2023-21115: Google Android

High severity, CVSS 8.8. EPSS: 0.1% chance of exploitation in the next 30 days.

In btm_sec_encrypt_change of btm_sec.cc, there is a possible way to downgrade the link key type due to improperly used crypto. This could lead to paired device escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12LAndroid ID: A-258834033

Affected products

• Google Android: version 11.0 only; version 12.0 only; version 12.1 only

Published 2023-06-15. Last modified 2026-06-17.