This indicates an attack attempt to exploit a Remote Command Injection vulnerability in NUUO and Netgear Network Video Recorder (NVR) products.
The vulnerability is due to insufficient checks when handling HTTP request from client. A remote attacker may be able to exploit this to execute arbitrary code on vulnerable systems via a crafted HTTP request.
NUUO NVRmini 2, versions 1.7.6 to 3.0.0
ReadyNAS Surveillance, v1.1.2 and prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.