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EUVD-2026-178238

fkie_cve-2022-31802

In CODESYS Gateway Server V2 for versions prior to V2.3.9.38 only a part of the the specified password is been compared to the real CODESYS Gateway password. An attacker may perform authentication by specifying a small password that matches the corresponding part of the longer real CODESYS Gateway password.

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-jp8v-m2cx-q392

gsd-2022-31802

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)