OPC UA Deep Dive Series (Part 4): Targeting Core OPC UA Components

This post analyzes the security risks in OPC UA deployments, explaining how protocol stacks, SDKs, and product implementations can be exploited to cause denial-of-service, authentication bypasses, information leaks, and pre-authenticated remote code execution with potential physical impact on ICS/SCADA systems; it emphasizes supply-chain risk from shared core libraries and cites prior demonstrations (Pwn2Own) and historical malware (Industroyer) as context.