A command injection vulnerability exists in the D-Link DIR-882 Router firmware DIR882A1_FW102B02 within the prog.cgi and rc binaries. The sub_433188 function in prog.cgi stores user-supplied email configuration parameters (EmailFrom, EmailTo, SMTPServerAddress, SMTPServerPort, AccountName) in NVRAM via nvram_safe_set. These values are later retrieved in the sub_448FDC function of rc using nvram_safe_get and concatenated into shell commands executed via twsystem() without sanitization. An unauthenticated remote attacker can exploit this vulnerability to execute arbitrary commands on the device through specially crafted HTTP requests to the routers web interface.