Description
An unauthenticated remote attacker can use a malicious OPC UA client to send a crafted request to affected CODESYS products which can cause a DoS due to incorrect calculation of buffer size.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| CODESYS | CODESYS Control for BeagleBone SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for emPC-A/iMX6 SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for IOT2000 SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for Linux ARM SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for Linux SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for PFC100 SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for PFC200 SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for PLCnext SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for Raspberry Pi SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control for WAGO Touch Panels 600 SL | < 4.12.0.0 | 4.12.0.0 |
| CODESYS | CODESYS Control RTE (for Beckhoff CX) SL | < 3.5.20.10 | 3.5.20.10 |
| CODESYS | CODESYS Control RTE (SL) | < 3.5.20.10 | 3.5.20.10 |
| CODESYS | CODESYS Runtime Toolkit | < 3.5.20.10 | 3.5.20.10 |
| CODESYS | CODESYS Control Win (SL) | < 3.5.20.10 | 3.5.20.10 |
| CODESYS | CODESYS HMI (SL) | < 3.5.20.10 | 3.5.20.10 |
Advisories 6
- ICSA-26-076-01 CODESYS in Festo Automation Suite CISA ICS & IT advisories · Mar 17, 2026
- FSA-202601 Several CODESYS vulnerabilities in Festo Automation Suite CERT@VDE · Feb 26, 2026
- VDE-2024-026 CODESYS: Vulnerability can cause a DoS on CODESYS OPC UA products CERT@VDE · May 14, 2025
- VDE-2025-009 WAGO: Vulnerabilities in CODESYS Control V3 - OPC UA Stack CERT@VDE · May 14, 2025
- WID-SEC-2024-1285 CODESYS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 7, 2025
- 3ADR011377 AC500 V3 Multiple vulnerabilities ABB PSIRT · Jan 7, 2025