This indicates an attack attempt to exploit a Code Injection vulnerability in UltimatePOS.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application when handling a crafted HTTP request. An unauthenticated remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted HTTP request.
System Compromise: Remote attackers can execute arbitrary code on vulnerable systems.
Currently we are unaware of any vendor supplied patch or updates available for this issue.