Description
An unauthenticated attacker can trick a local user into executing arbitrary code by opening a deliberately manipulated CODESYS project file with a CODESYS development system. This arbitrary code is executed in the user context.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| CODESYS | CODESYS Development System | 0.0.0 – < 3.5.21.40 | 3.5.21.40 |
Advisories 4
- VDE-2025-081 WAGO: Multiple PLCs and Communication Components are Affected by multiple Vulnerabilities leading to RCE CERT@VDE · Nov 6, 2026
- WID-SEC-2025-2700 CODESYS Control und Development System: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 28, 2026
- 3ADR011566 ABB Automation Builder - Deserialization of untrusted data ABB PSIRT · Sep 28, 2026
- ADVISORY2025-11_VDE-2025-101 CODESYS Development System - Deserialization of Untrusted Data CERT@VDE · Dec 1, 2025