A buffer overflow vulnerability (CVE-2026-7248) was discovered in D-Link DI-8100 firmware version 16.07.26A1. The vulnerability affects the tgfile_htm function in the CGI endpoint, where manipulation of the 'fn' argument leads to buffer overflow. The attack can be executed remotely and the exploit has been made publicly available, making this a high-priority security issue for affected D-Link router users.