Harmony Control and Timer Relay NFC Authentication Bypass Security Notification

This document details a high-severity authentication bypass vulnerability (CVE-2024-0568) in Schneider Electric's Harmony Control Relay and Harmony Timer Relay products, which could allow unauthorized tampering of device configuration via NFC communication. It provides affected product versions, mitigations such as physical access controls and cabinet locking, and general cybersecurity best practices for industrial control systems.