CVE-2022-31806: Codesys Plcwinnt

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

In CODESYS V2 PLCWinNT and Runtime Toolkit 32 in versions prior to V2.4.7.57 password protection is not enabled by default and there is no information or prompt to enable password protection at login in case no password is set at the controller.

Affected products

• Codesys Plcwinnt: before 2.4.7.57 (fixed in 2.4.7.57)
• Codesys Runtime Toolkit: before 2.4.7.57 (fixed in 2.4.7.57)

Published 2022-06-24. Last modified 2026-06-17.