This indicates an attack attempt against a Information Disclosure vulnerability in NetDecision Dashboard Server.
The vulnerability is caused by an error when the vulnerable software handles malformed HTTP requests. It allows a remote attacker to view arbitrary script via sending a crafted HTTP request.
Netmechanica NetDecision 4.5.1 Dashboard Server version 1.0
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Upgrade to the latest version,available from the web site.