Advantech R-SeeNet is an industrial monitoring software from Advantech, Taiwan, China. The software is based on the snmp protocol for monitoring platforms and is available for Linux and Windows platforms.A cross-site scripting vulnerability exists in the device_graph_page.php script function of Advantech R-SeeNet v2.4.12 (20.10.2020). An attacker can exploit this vulnerability to execute arbitrary JavaScript code in the context of the target user’s browser.