Sophos SafeGuard Enterprise Device Encryption 5.x through 5.50.8.13, Sophos SafeGuard Easy Device Encryption Client 5.50.x, and Sophos Disk Encryption 5.50.x have a delay before removal of (1) out-of-date credentials and (2) invalid credentials, which allows physically proximate attackers to defeat the full-disk encryption feature by leveraging knowledge of these credentials.

The Device Encryption Client component in Sophos SafeGuard Enterprise 6.0, when a volume-based encryption policy is enabled in conjunction with a user-defined key, does not properly block use of exFAT USB flash drives, which makes it easier for local users to bypass intended access restrictions and copy sensitive information to a drive via multiple removal and reattach operations.