This indicates an attack attempt against an Arbitrary File Upload vulnerability in Visual Mining NetCharts Server.
The vulnerability is due to insufficient sanitizing of user supplied inputs when handling an crafted HTTP request. It allows a remote attacker to upload an arbitrary file onto vulnerable systems via an crafted HTTP request.
Visual Mining NetCharts Server 7.0.1 and prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.