A stack-based buffer overflow vulnerability has been discovered in Tenda CX12L router firmware version 16.03.53.12. The flaw affects the fromRouteStatic function in the /goform/RouteStatic file, where manipulation of the page argument leads to the overflow. This vulnerability can be exploited remotely by attackers. The exploit code has been publicly released, increasing the risk of active exploitation. The vulnerability poses a significant security risk to affected Tenda router users.