A stack-based buffer overflow vulnerability has been identified in UTT HiPER 1200GW up to version 2.5.3-170306. The flaw affects the Web Management Interface, specifically the /goform/formPptpClientConfig file. Attackers can exploit this by manipulating PPTP server address, username, password, or tunnel name arguments. The vulnerability can be exploited remotely and a public exploit is available. This weakness poses a significant security risk as it allows remote code execution through the web interface.