Description
Affected products do not properly synchronize access to their monitoring functionality. When multiple clients send concurrent requests, this may lead to incorrect reads or writes, or to corruption of internal memory structures. An authenticated remote attacker with monitoring access can exploit this issue to cause incorrect data processing or a denial-of-service condition.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| CODESYS | Control RTE (SL) | 3.0.0.0 – < 3.5.22.40 | 3.5.22.40 |
| CODESYS | Control RTE (for Beckhoff CX) SL | 3.0.0.0 – < 3.5.22.40 | 3.5.22.40 |
| CODESYS | Control Win (SL) | 3.0.0.0 – < 3.5.22.40 | 3.5.22.40 |
| CODESYS | Runtime Toolkit | 3.0.0.0 – < 3.5.22.40 | 3.5.22.40 |
| CODESYS | Safety SIL2 | 3.0.0.0 – < 3.5.22.40 | 3.5.22.40 |
| CODESYS | HMI (SL) | 3.0.0.0 – < 3.5.22.40 | 3.5.22.40 |
| CODESYS | Development System 3 | 3.0.0.0 – < 3.5.22.40 | 3.5.22.40 |
| CODESYS | Control for BeagleBone SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for emPC-A/iMX6 SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for IOT2000 SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for Linux ARM SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for Linux SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for PFC100 SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for PFC200 SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for PLCnext SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for Raspberry Pi SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Control for WAGO Touch Panels 600 SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
| CODESYS | Virtual Control SL | 3.5.0.0 – < 4.23.0.0 | 4.23.0.0 |
Advisories 2
- ADVISORY2026-12_VDE-2026-097 CODESYS Control Runtime - Improper Synchronization in Monitoring CERT@VDE · Oct 22, 2026
- WID-SEC-2026-3710 CODESYS Control Runtime und Gateway Client: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 1, 2026