This indicates an attack attempt to exploit an Information Disclosure vulnerability in Kguard DVR.
The vulnerability is due to insufficient validation of user supplied inputs in the application. A remote attacker may be able to exploit this to get access to sensitive information within the context of the application, via a crafted request.
Kguard Digital Video Recorder 104 v2
Kguard Digital Video Recorder 108 v2
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems
Currently we are not aware of any vendor supplied patch for this issue