CVE-2023-5767: Hitachienergy RTU520 Firmware

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability exists in the webserver that affects the RTU500 series product versions listed below. A malicious actor could perform cross-site scripting on the webserver due to an RDT language file being improperly sanitized.

Affected products

• Hitachienergy RTU520 Firmware: from 12.0.1, up to and including 12.0.14; from 12.2.1, up to and including 12.2.11; from 12.4.1, up to and including 12.4.11; from 12.6.1, up to and including 12.6.9; from 12.7.1, up to and including 12.7.6; from 13.2.1, up to and including 13.2.6; …
• Hitachienergy RTU530 Firmware: from 12.0.1, up to and including 12.0.14; from 12.2.1, up to and including 12.2.11; from 12.4.1, up to and including 12.4.11; from 12.6.1, up to and including 12.6.9; from 12.7.1, up to and including 12.7.6; from 13.2.1, up to and including 13.2.6; …
• Hitachienergy RTU540 Firmware: from 12.0.1, up to and including 12.0.14; from 12.2.1, up to and including 12.2.11; from 12.4.1, up to and including 12.4.11; from 12.6.1, up to and including 12.6.9; from 12.7.1, up to and including 12.7.6; from 13.2.1, up to and including 13.2.6; …
• Hitachienergy RTU560 Firmware: from 12.0.1, up to and including 12.0.14; from 12.2.1, up to and including 12.2.11; from 12.4.1, up to and including 12.4.11; from 12.6.1, up to and including 12.6.9; from 12.7.1, up to and including 12.7.6; from 13.2.1, up to and including 13.2.6; …

Published 2023-12-04. Last modified 2026-06-17.