Secunia Security Advisory – Michael Domberg has reported a weakness in T-Com Speedport, which can be exploited by malicious people to brute force an administrative user’s password.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56694/sa25266.txt
Source: https://packetstormsecurity.com/files/56694/Secunia-Security-Advisory-25266.html