There are 2 open security issues in buster.
1 issue left for the package maintainer to handle:
You can find information about how to handle this issue in the security team's documentation.
1 ignored issue:
A bug in Bluez may allow for the Bluetooth Discoverable state being set to on when no Bluetooth agent is registered with the system. This situation could lead to the unauthorized pairing of certain Bluetooth devices without any form of authentication. Versions before bluez 5.51 are vulnerable.