A buffer overflow vulnerability has been discovered in D-Link DI-8100 firmware version 16.07.26A1. The vulnerability affects the file_exten_asp function in the File Extension Handler component. By manipulating the Name argument, an attacker can trigger a buffer overflow condition. The vulnerability can be exploited remotely, making it particularly dangerous. Public exploits have been disclosed and are available for use. This affects the file_exten.asp component of the router's web interface.