CVE-2022-1794: Codesys Opc Da Server

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

The CODESYS OPC DA Server prior V3.5.18.20 stores PLC passwords as plain text in its configuration file so that it is visible to all authorized Microsoft Windows users of the system.

Affected products

• Codesys Opc Da Server: from 3.0.0, before 3.5.18.20 (fixed in 3.5.18.20)

Published 2022-07-11. Last modified 2026-06-17.