This indicates an attack attempt to exploit a Cross-Site Scripting Vulnerability in TerraMaster TOS.
This vulnerability is due to insufficient validation of the user-supplied data. A remote attacker can exploit this vulnerability by enticing a target user into clicking a malicious link. Successful exploitation could allow the attacker to execute arbitrary script code in the context of the user's browser.
TerraMaster TOS version 3.1.03
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.