CVE-2025-41691
High
Description
An unauthenticated remote attacker may trigger a NULL pointer dereference in the affected CODESYS Control runtime systems by sending specially crafted communication requests, potentially leading to a denial-of-service (DoS) condition.
SeverityHigh
CVSS7.5
Exploit probability—
ProductControl RTE (SL)
PublishedAug 4, 2025
First seenAug 4, 2025
Weakness typeCWE-476NULL pointer dereference
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 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
- CODESYS Control for PLCnext SL4.17.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| CODESYS Control RTE (SL) | 3.5.21.10 ≤ v < 3.5.21.20 | 3.5.21.20 |
| CODESYS Control RTE (for Beckhoff CX) SL | 3.5.21.10 ≤ v < 3.5.21.20 | 3.5.21.20 |
| CODESYS Control Win (SL) | 3.5.21.10 ≤ v < 3.5.21.20 | 3.5.21.20 |
| CODESYS HMI (SL) | 3.5.21.10 ≤ v < 3.5.21.20 | 3.5.21.20 |
| CODESYS Control for BeagleBone SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for emPC-A/iMX6 SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for IOT2000 SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for Linux ARM SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for Linux SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for PFC100 SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for PFC200 SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for PLCnext SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for Raspberry Pi SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Control for WAGO Touch Panels 600 SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
| CODESYS Virtual Control SL | 4.16.0.0 ≤ v < 4.17.0.0 | 4.17.0.0 |
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