This indicates an attack attempt against a Cross-Site Scripting (XSS) vulnerability in HP System Management Homepage.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application when handling a crafted HTTP request. A remote attacker can exploit this to execute arbitrary script code within the context of the user's browser.
HP System Management Homepage before v7.6.1
System Compromise: Remote attackers can execute arbitrary script code within the context of the target user's browser
Apply the most recent upgrade or patch from the vendor.