D-Link DWR-932B LTE router has Telnet and SSH services running by default, with two hard-coded secret accounts (admin:admin and root:1234) If successfully exploited, these vulnerabilities could allow attackers to remotely hijack and control your router, as well as network. Remote FOTA (Firmware-Over-The-Air) update mechanism is also vulnerable, according to a security researcher. The router with a big memory processor, sizable memory processor and good free space is so badly secured it would be trivial for attackers to use this attack vector.
Source: https://thehackernews.com/2016/09/hacking-d-link-wireless-router.html