CVE-2025-41659
High
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.
SeverityHigh
CVSS8.3
Exploit probability—
ProductControl RTE (SL)
PublishedAug 4, 2025
First seenAug 4, 2025
Weakness typeCWE-732CWE-732
How to fix
Update
- CODESYS Control RTE (SL)3.5.21.20 or later
- CODESYS Control RTE (for Beckhoff CX) SL3.5.21.20 or later
- CODESYS Control Win (SL)3.5.21.20 or later
- CODESYS HMI (SL)3.5.21.20 or later
- CODESYS Runtime Toolkit3.5.21.20 or later
- CODESYS Control for BeagleBone SL4.17.0.0 or later
- CODESYS Control for emPC-A/iMX6 SL4.17.0.0 or later
- CODESYS Control for IOT2000 SL4.17.0.0 or later
- CODESYS Control for Linux ARM SL4.17.0.0 or later
- CODESYS Control for Linux SL4.17.0.0 or later
- CODESYS Control for PFC100 SL4.17.0.0 or later
- CODESYS Control for PFC200 SL4.17.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| CODESYS Control RTE (SL) | v < 3.5.21.20 | 3.5.21.20 |
| CODESYS Control RTE (for Beckhoff CX) SL | v < 3.5.21.20 | 3.5.21.20 |
| CODESYS Control Win (SL) | v < 3.5.21.20 | 3.5.21.20 |
| CODESYS HMI (SL) | v < 3.5.21.20 | 3.5.21.20 |
| CODESYS Runtime Toolkit | v < 3.5.21.20 | 3.5.21.20 |
| CODESYS Control for BeagleBone SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for emPC-A/iMX6 SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for IOT2000 SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for Linux ARM SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for Linux SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for PFC100 SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for PFC200 SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for PLCnext SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for Raspberry Pi SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for WAGO Touch Panels 600 SL | v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Virtual Control SL | v < 4.17.0.0 | 4.17.0.0 |
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