This indicates an attack attempt to exploit a Code Execution vulnerability in Serviio Media Server.
The vulnerability is due to improper validation of user supplied inputs when handling a crafted File uploaded via HTTP. A remote attacker may be able to exploit this to execute arbitrary command within the context of the process, via a crafted File.
Serviio Media Server PRO 188.8.131.52
Serviio Media Server 1.6.1
Serviio Media Server 1.7.0
Serviio Media Server 1.7.1
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue