A buffer overflow vulnerability has been discovered in Tenda F456 router firmware version 1.0.0.5. The flaw affects the formWrlExtraSet function in the /goform/WrlExtraSet file of the httpd component. Attackers can exploit this vulnerability remotely by manipulating the 'Go' argument parameter. The vulnerability allows for buffer overflow attacks that can be executed from remote locations. Public exploits have been published and are available for use, making this a high-priority security concern for affected devices.