This indicates an attack attempt to exploit a Cross-Site Scripting vulnerability in KEYSIGHT EMPro.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application. A remote attacker can exploit this to execute arbitrary script code in the context of the affected site or access sensitive browser-based information.
KEYSIGHT EMPro 2017
System Compromise : Remote attackers can execute arbitrary script code within the context of the target user's browser
Upgrade to KEYSIGHT EMPro 2018 or later version.