HMS Networks Ewon Flexy with firmware before 15.0s4, Cosy+ with firmware 22.xx before 22.1s6, and Cosy+ with firmware 23.xx before 23.0s3 have a stack buffer ov…

HMS Networks Ewon Flexy and Cosy+ devices contain a critical stack buffer overflow vulnerability that can lead to denial of service and unauthenticated remote code execution. The vulnerability affects Ewon Flexy firmware before version 15.0s4, Cosy+ firmware 22.xx before 22.1s6, and Cosy+ firmware 23.xx before 23.0s3. This represents a high-severity security flaw in industrial networking equipment that could allow attackers to gain unauthorized control of affected systems without authentication.