download.rsp on ShenZhen Anni "5 in 1 XVR" devices allows remote attackers to download the configuration (without a login) to discover the password.
https://github.com/D0neMkj/EXP_IOT/tree/master/CAMERA/XVR_camera
https://github.com/D0neMkj/EXP_IOT/blob/master/CAMERA/XVR_camera/readme