CVE-2022-22517: Communication Components in multiple CODESYS products vulnerable to communication channel disruption

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-04-07 · updated 2026-06-17
Weakness: CWE-334

Description

An unauthenticated, remote attacker can disrupt existing communication channels between CODESYS products by guessing a valid channel ID and injecting packets. This results in the communication channel to be closed.

Affected products

CODESYS Control for BeagleBone SL: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control For Beckhoff Cx9020: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control For Empc-A/Imx6 Sl: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control for IOT2000 SL: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control for Linux SL: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control for PFC100 SL: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control for PFC200 SL: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control for PLCnext SL: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control for Raspberry Pi SL: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control for WAGO Touch Panels 600 SL: before 4.5.0.0 — fixed in 4.5.0.0
CODESYS Control RTE (SL): before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Control Rte Sl (For Beckhoff Cx): before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Control Runtime System Toolkit: before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Control Win (SL): before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Development System: from 3.0 before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Edge Gateway: before 3.5.18.0; before 4.5.0.0 — fixed in 3.5.18.0, 4.5.0.0
CODESYS Embedded Target Visu Toolkit: before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Gateway Server V2: before 3.5.18.0 — fixed in 3.5.18.0
CODESYS HMI (SL): before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Remote Target Visu Toolkit: before 3.5.18.0 — fixed in 3.5.18.0

How to fix

Upgrade to a fixed version: CODESYS Control for BeagleBone SL 4.5.0.0; CODESYS Control For Beckhoff Cx9020 4.5.0.0; CODESYS Control For Empc-A/Imx6 Sl 4.5.0.0; CODESYS Control for IOT2000 SL 4.5.0.0; CODESYS Control for Linux SL 4.5.0.0; CODESYS Control for PFC100 SL 4.5.0.0; CODESYS Control for PFC200 SL 4.5.0.0; CODESYS Control for PLCnext SL 4.5.0.0; CODESYS Control for Raspberry Pi SL 4.5.0.0; CODESYS Control for WAGO Touch Panels 600 SL 4.5.0.0; CODESYS Control RTE (SL) 3.5.18.0; CODESYS Control Rte Sl (For Beckhoff Cx) 3.5.18.0. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2022-22517 or the next vulnerability affects your stack