TOTOLINK EX200 firmware-upload error handling can activate an unauthenticated root telnet service

Overview A flaw in the firmware-upload error-handling logic of the TOTOLINK EX200 extender can cause the device to unintentionally start an unauthenticated root-level telnet service. This condition may allow a remote authenticated attacker to gain full system access. Description In the End-of-Lif...