This indicates an attack attempt to exploit a SQL Injection vulnerability in Dell SonicWALL Universal Management Suite.
The vulnerability is due to insufficient validation of the host and service parameters when processing HTTP requests. It may allow remote attackers to execute arbitrary SQL statements via a crafted HTTP request which could lead to the disclosure of sensitive information.
Dell SonicWALL GMS 8.0
Dell SonicWALL GMS 8.1
System Compromise: Remote attackers can add, view, delete or modify data in the database of the affected application
Apply the most recent upgrade or patch from the vendor.