A buffer overflow vulnerability has been discovered in UTT 进取 520W version 1.7.7-180627. The vulnerability affects the strcpy function in the /goform/ConfigExceptMSN file and can be exploited remotely. The exploit has been publicly disclosed and is available for use. The vendor was notified of the vulnerability but has not responded to the disclosure. This represents a significant security risk due to the remote exploitability and public availability of the exploit.