The NVRmini 2 Network Video Recorder, Crystal NVR and the ReadyNAS Surveillance application are vulnerable to an authenticated remote code execution on the exposed web administration interface. An administrative account is needed to exploit this vulnerability. This results in code execution as root in the NVRmini and the ‘admin’ user in ReadyNAS. This exploit has been tested on several versions of the NVRmini 2, Crystal and the ReadyNAS Surveillance. It probably also works on the NVRsolo and other Nuuo devices, but it has not been tested in those devices.