A stack-based buffer overflow vulnerability was discovered in D-Link DI-8400 routers up to firmware version 16.07.26A1. The vulnerability affects an unknown function in the /dbsrv.asp file and can be exploited remotely by manipulating the 'str' argument. The exploit code has been made publicly available, increasing the risk of active exploitation. This vulnerability allows remote attackers to potentially execute arbitrary code or cause denial of service conditions on affected devices.