CVE-2021-47770: Autonomy OpenPLC

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

OpenPLC v3 contains an authenticated remote code execution vulnerability that allows attackers with valid credentials to inject malicious code through the hardware configuration interface. Attackers can upload a custom hardware layer with embedded reverse shell code that establishes a network connection to a specified IP and port, enabling remote command execution.

Affected products

• Autonomy OpenPLC

Published 2026-01-21. Last modified 2026-06-17.