CVE-2016-10398: Google Android

Medium severity, CVSS 6.2. EPSS: 0.2% chance of exploitation in the next 30 days.

Android 6.0 has an authentication bypass for attackers with root and physical access. Cryptographic authentication tokens (AuthTokens) used by the Trusted Execution Environment (TEE) are protected by a weak challenge. This allows adversaries to replay previously captured responses and use the TEE without authenticating. All apps using authentication-gated cryptography are vulnerable to this attack, which was confirmed on the LG Nexus 5X.

Affected products

• Google Android: version 6.0 only

Published 2017-07-17. Last modified 2026-06-17.