CODESYS Modbus TCP Server - Improper resource management
[Advisory2026-05_VDE-2026-042] CODESYS Modbus is an add‑on for the CODESYS Development System that provides a fully integrated Modbus protocol stack along with diagnostic capabilities. A flaw in the CODESYS Modbus TCP Server protocol stack library results in a vulnerability. When a Modbus TCP server is configured, this vulnerable protocol stack is downloaded to and executed by CODESYS Control runtime systems. The vulnerability is caused by a resource management issue in the Modbus TCP server…
EPSS 0.00 CVE-2026-35227 CODESYS DE