Modicon Quantum Credentials Management Vulnerability Security Notification

This document details a high-severity vulnerability (CVE-2018-7788) in Schneider Electric's Modicon Quantum PLC, specifically a credentials management flaw (CWE-255) that can cause a denial of service via Telnet. It provides remediation steps, including upgrading to firmware V2.40 or migrating to the Modicon M580 ePAC, along with general cybersecurity best practices for industrial control systems.