The vulnerability description for CVE-2026-51763 clearly identifies 'freeStaClient' as the function with incorrect access control. This function, when called without proper authentication, allows an unauthenticated attacker to forcibly disconnect wireless clients. The attack vector involves sending a crafted MQTT message to the 'cs_broker' component, which then presumably invokes the 'freeStaClient' function. Since the device is an embedded system (TOTOLINK T6 router), its firmware source code is proprietary and not publicly available. Therefore, it is not possible to provide a specific file path or a more detailed function signature beyond the name mentioned in the CVE description. The 'freeStaClient' function would appear in a runtime profiler when an attacker successfully exploits this vulnerability by sending the malicious MQTT message, as it is the core function responsible for the unauthorized client disconnection.