The devices contain two hard coded user accounts with hardcoded passwords that allow an unauthenticated remote attacker for full control of the affected devices.
An unauthenticated remote attacker can perform a brute-force attack on the credentials of the remote service portal with a high chance of success, resulting in connection lost.
An unauthenticated local attacker can decrypt the devices config file and therefore compromise the device due to a weak implementation of the encryption used.
In Red Lion Europe mbCONNECT24 and mymbCONNECT24 and Helmholz myREX24 and myREX24.virtual up to and including 2.14.2 an improperly implemented access validation allows an authenticated, low privileged attacker to gain read access to limited, non-critical device information in his account he should not have access to.
A vulnerability in Red Lion Europe mbNET/mbNET.rokey and Helmholz REX 200 and REX 250 devices with firmware lower 7.3.2 allows an
authenticated remote attacker with high privileges to inject malicious HTML or JavaScript code (XSS).
A remote, unauthenticated attacker can enumerate valid users by sending specific requests to the webservice of MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2.
In MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server.