This indicates an attack attempt against a SQL Injection vulnerability in SINAPSI eSolar Light Photovoltaic System Monitor.
The vulnerability is caused by insufficient sanitizing of the parameters "lingua", that is passed to "changelanguagesession.php" , or the parameter "inverterselect" that is passed to "dettagliinverter.php". It allows a remote attacker to inject arbitrary SQL statement via a crafted HTTP Request.
SINAPSI eSolar Light Photovoltaic System Monitor
System Compromise: Remote attackers can add, view, delete or modify data in the database of the affected application
Currently we are unaware of any vendor supplied patch for this issue.