Beetel 777VR1 WPA2 PSK hard-coded credentials

A security flaw has been discovered in Beetel 777VR1 up to 01.00.09. This issue affects some unknown processing of the component WPA2 PSK. Performing a manipulation results in hard-coded credentials. The attacker must have access to the local network to execute the attack. The complexity of an attack is rather high. The exploitability is assessed as difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.