D-Link DIR-2640 trust management issue vulnerability

D-Link DIR-2640 is a high-powered Wi-Fi router from D-Link, a Taiwan-based company. D-Link DIR-2640 Quagga 1.11B02 and previous versions are vulnerable to a trust management issue, which stems from the use of default hard-coded credentials for the service, and can be exploited by remote attackers to gain administrative access to zebra or ripd these services for administrative access.