Dasan Networks GPON ONT WiFi Router H64X Series Authentication Bypass

Dasan Networks GPON ONT WiFi Router H64X Series does not properly perform authentication and authorization, allowing it to be bypassed through cookie manipulation. Setting the Cookie ‘Grant’ with value 1 (user) or 2 (admin) will bypass security controls in place enabling the attacker to take full control of the device management interface.
Source: Dasan Networks GPON ONT WiFi Router H64X Series Authentication Bypass