EcoStruxure OPC UA Server Expert and Modicon Communication Server XXE Vulnerability Security Notification

This document details a security vulnerability (CVE-2023-37200) in EcoStruxure OPC UA Server Expert and Modicon Communication Server, involving an XML External Entity (XXE) reference flaw that could lead to loss of confidentiality. It provides remediation via version SV2.01 SP2, along with mitigations and general cybersecurity best practices for affected Schneider Electric products.