I maintain an alternative firmware for the Speedport series and can confirm the flaw in the following firmwares: Speedport W500V Firmware T-Com 1.30 Speedport 500V Firmware T-Com 1.31 Speedport W500V Firmware mod500 Speedport 500V Firmware mod500 Targa WR500 VoIP Firmware mod500 I'm 99% certain that the original firmware for the Targa is also concerned. CORRECTION White the description of the security flaw is correct, please notice: Installing a new firmware does NOT change the system password!