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EUVD-2026-171452

fkie_cve-2022-31804

The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauthenticated attacker may allocate an arbitrary amount of memory, which may lead to a crash of the Gateway due to an out-of-memory condition.

FSA-202406 — Several Codesys Gateway v2 vulnerabilities in Codesys provided by Festo

An unauthenticated attacker would be able to send crafted requests to cause the CODESYS Gateway Server V2 to allocate excessive memory or consume all available TCP client connections. Besides, passwords are insufficiently checked during login.

All versions of the following CODESYS V2 product prior version V2.3.9.38 are affected:

• CODESYS Gateway Server

GHSA-qhgm-4r4g-j663

gsd-2022-31804

ICSA-25-182-03 — FESTO CODESYS

All versions of the following CODESYS V2 product prior version V2.3.9.38 are affected:

• CODESYS Gateway Server

VDE-2022-040 — WAGO: Multiple Vulnerabilities in Controller with WAGO I/O-Pro / CODESYS 2.3 Runtime

UPDATE A: Solution has updated release datesUPDATE B: Solution has updated release datesThis Advisory is published with reference to:

CODESYS Advisory 2022-11 (Security update for CODESYS Control V2) CODESYS Advisory 2022-12 (Security update for CODESYS V2 password transport) CODESYS Advisory 2022-13 (Security update for CODESYS Gateway V2)