The vulnerability of Zyxel Wi-Fi transponders lies in the use of pre-set credentials, which allows attackers to intercept DNS requests.

The vulnerability of the Zyxel Wi-Fi signal relay stems from the use of pre-set account credentials “root” and “admin” default password: 1234 during Telnet protocol connections. Exploiting this vulnerability allows a remote attacker to intercept DNS requests by reconfiguring the built-in...