Description
An unauthenticated remote attacker may be able to control the format string of messages processed by the Audit Log of the CODESYS Control runtime system, potentially resulting in a denial‑of‑service (DoS) condition.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| CODESYS | CODESYS Control RTE (SL) | 3.5.17.0 – < 3.5.22.0 | 3.5.22.0 |
| CODESYS | CODESYS Control RTE (for Beckhoff CX) SL | 3.5.17.0 – < 3.5.22.0 | 3.5.22.0 |
| CODESYS | CODESYS Control Win (SL) | 3.5.17.0 – < 3.5.22.0 | 3.5.22.0 |
| CODESYS | CODESYS Runtime Toolkit | 3.5.17.0 – < 3.5.22.0 | 3.5.22.0 |
| CODESYS | CODESYS Control for BeagleBone SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for emPC-A/iMX6 SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for IOT2000 SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for Linux ARM SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for Linux SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for PFC100 SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for PFC200 SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for PLCnext SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for Raspberry Pi SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Control for WAGO Touch Panels 600 SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
| CODESYS | CODESYS Virtual Control SL | 4.1.0.0 – < 4.21.0.0 | 4.21.0.0 |
Advisories 2
- ADVISORY2026-03_VDE-2026-018 CODESYS Control V3 - Externally-controlled format string in Auditlog CERT@VDE · Jun 18, 2026
- WID-SEC-2026-0832 CODESYS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 24, 2026