CVE-2021-31630: Openplcproject OpenPLC v3 Firmware

High severity, CVSS 8.8. EPSS: 27.1% chance of exploitation in the next 30 days.

Command Injection in Open PLC Webserver v3 allows remote attackers to execute arbitrary code via the "Hardware Layer Code Box" component on the "/hardware" page of the application.

Affected products

• Openplcproject OpenPLC v3 Firmware: affected versions not specified

Published 2021-08-03. Last modified 2026-06-17.