Akuvox E11 contains a function that encrypts messages which are then forwarded. The IV vector and the key are static, and this may allow an attacker to decrypt messages.

Akuvox E11 allows direct SIP calls. No access control is enforced by the SIP servers, which could allow an attacker to contact any device within Akuvox to call any other device.

The Akuvox E11 libvoice library provides unauthenticated access to the camera capture for image and video. This could allow an attacker to view and record image and video from the camera.

The Akuvox E11 Media Access Control (MAC) address, a primary identifier, combined with the Akuvox E11 IP address, could allow an attacker to identify the device on the Akuvox cloud.

Akuvox E11 uses a hard-coded cryptographic key, which could allow an attacker to decrypt sensitive information.