CODESYS CODESYS Modbus vulnerabilities

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Published CVEs affecting CODESYS CODESYS Modbus: 1 record(s), with affected versions and fixes.

CVE-2026-35227 High · 8.2 CWE-772 May 12, 2026

Improper resource management in CODESYS Modbus TCP Server

An unauthenticated remote attacker may exhaust all available TCP connections in the CODESYS Modbus TCP Server stack if a race condition in connection handling is successfully exploited, preventing legitimate clients from establishing new connections.