BIOTRONIK CardioMessenger II, The affected products allow credential reuse for multiple authentication purposes. An attacker with adjacent access to the CardioMessenger can disclose its credentials used for connecting to the BIOTRONIK Remote Communication infrastructure.

BIOTRONIK CardioMessenger II, The affected products do not properly enforce mutual authentication with the BIOTRONIK Remote Communication infrastructure.

BIOTRONIK CardioMessenger II, The affected products use individual per-device credentials that are stored in a recoverable format. An attacker with physical access to the CardioMessenger can use these credentials for network authentication and decryption of local data in transit.

BIOTRONIK CardioMessenger II, The affected products do not encrypt sensitive information while at rest. An attacker with physical access to the CardioMessenger can disclose medical measurement data and the serial number from the implanted cardiac device the CardioMessenger is paired with.

BIOTRONIK CardioMessenger II, The affected products transmit credentials in clear-text prior to switching to an encrypted communication channel. An attacker can disclose the product’s client credentials for connecting to the BIOTRONIK Remote Communication infrastructure.