D-Link router - Hidden Backdoor

Certain models of D-Link wireless routers contain an undisclosed factory testing backdoor. Unauthenticated attackers on the local area network can force the device to enable Telnet service by accessing a specific URL and can log in by using the administrator credentials obtained from analyzing the firmware.

A vulnerability has been found in D-Link R15 (AX1500) 1.20.01 and below. By manipulating the model name parameter during a password change request in the web administrator page, it is possible to trigger a command injection in httpd.

D-Link R15 before v1.08.02 was discovered to contain no firewall restrictions for IPv6 traffic. This allows attackers to arbitrarily access any services running on the device that may be inadvertently listening via IPv6.