ABB B&R Automation Runtime DoS Vulnerability SDM | MSSP Advisory

ABB B&R Automation Runtime versions below 6.3 and Q4.93 contain a denial of service vulnerability in the System Diagnostics Manager component that allows attackers to crash industrial control systems. The vulnerability stems from improper resource locking in the SDM component and affects critical infrastructure across chemical, manufacturing, energy, and water treatment sectors worldwide.

Manufacturing and industrial clients likely run B&R automation systems that control physical processes, and a successful DoS attack could shut down production lines or safety systems. Your clients expect you to know when their operational technology faces active threats, and staying silent on industrial control vulnerabilities creates liability exposure when production stops.

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