Description
A low-privileged attacker can remotely access the PKI folder of the CODESYS Control runtime system and thus read and write certificates and its keys. This allows sensitive data to be extracted or to accept certificates as trusted. Although all services remain available, only unencrypted communication is possible if the certificates are deleted.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| CODESYS | Control RTE (SL) | 0.0.0.0 – < 3.5.21.20 | 3.5.21.20 |
| CODESYS | Control RTE (for Beckhoff CX) SL | 0.0.0.0 – < 3.5.21.20 | 3.5.21.20 |
| CODESYS | Control Win (SL) | 0.0.0.0 – < 3.5.21.20 | 3.5.21.20 |
| CODESYS | HMI (SL) | 0.0.0.0 – < 3.5.21.20 | 3.5.21.20 |
| CODESYS | Runtime Toolkit | 0.0.0.0 – < 3.5.21.20 | 3.5.21.20 |
| CODESYS | Control for BeagleBone SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for emPC-A/iMX6 SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for IOT2000 SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for Linux ARM SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for Linux SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for PFC100 SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for PFC200 SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for PLCnext SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for Raspberry Pi SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Control for WAGO Touch Panels 600 SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
| CODESYS | Virtual Control SL | 0.0.0.0 – < 4.17.0.0 | 4.17.0.0 |
Advisories 7
- ICSA-26-132-03 ABB AC500 V3 Multiple Vulnerabilities CISA ICS & IT advisories · May 12, 2026
- VDE-2026-005 ifm: Multiple Vulnerabilities in CR3171 CERT@VDE · May 6, 2026
- 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
- 3ADR011524 AC500 V3 Multiple vulnerabilities ABB PSIRT · Feb 24, 2026
- ADVISORY2025-07_VDE-2025-051 CODESYS Control V3 - Exposed PKI folder CERT@VDE · Sep 1, 2025
- WID-SEC-2025-1705 CODESYS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 4, 2025