Description
A remote, unauthenticated attacker can send a specific crafted HTTP or HTTPS requests causing a buffer over-read resulting in a crash of the webserver of the CODESYS Control runtime system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| CODESYS | CODESYS Control RTE (SL) | V3.5.18.0 – < V3.5.18.0 | V3.5.18.0 |
| CODESYS | CODESYS Control RTE (for Beckhoff CX) SL | V3.5.18.0 – < V3.5.18.0 | V3.5.18.0 |
| CODESYS | CODESYS Control Win (SL) | V3.5.18.0 – < V3.5.18.0 | V3.5.18.0 |
| CODESYS | CODESYS HMI (SL) | V3.5.18.0 – < V3.5.18.0 | V3.5.18.0 |
| CODESYS | CODESYS Control Runtime System Toolkit | V3.5.18.0 – < V3.5.18.0 | V3.5.18.0 |
| CODESYS | CODESYS Embedded Target Visu Toolkit | V3.5.18.0 – < V3.5.18.0 | V3.5.18.0 |
| CODESYS | CODESYS Remote Target Visu Toolkit | V3.5.18.0 – < V3.5.18.0 | V3.5.18.0 |
| CODESYS | CODESYS Control for BeagleBone SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for Beckhoff CX9020 SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for emPC-A/iMX6 SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for IOT2000 SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for Linux SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for PFC100 SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for PFC200 SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for PLCnext SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for Raspberry Pi SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
| CODESYS | CODESYS Control for WAGO Touch Panels 600 SL | V4.5.0.0 – < V4.5.0.0 | V4.5.0.0 |
Advisories 5
- 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
- ICSA-25-273-04 Festo Controller CECC-S,-LK,-D Family Firmware (Update A) CISA ICS & IT advisories · Nov 13, 2025
- FSA-202202 Festo: Controller CECC-S,LK,D family <= 2.3.8.1 - multiple vulnerabilities in CODESYS V3 runtime system CERT@VDE · Nov 3, 2025
- FSA-202203 Festo: Controller CECC-S,LK,D family firmware 2.4.2.0 - multiple vulnerabilities in CODESYS V3 runtime system CERT@VDE · Jul 10, 2025