Unauthenticated Code Execution in CODESYS Development System
CVE-2025-41700

7.8HIGH

Key Information:

Vendor

Codesys

Status
Codesys Development System
Vendor
CVE Published:
1 December 2025

What is CVE-2025-41700?

An issue has been identified in the CODESYS Development System that allows an unauthenticated attacker to exploit a manipulated project file. By tricking a local user into opening a compromised CODESYS project file, an attacker can execute arbitrary code within the context of that user. This poses a serious risk, as it could lead to unauthorized actions and potential system compromise. Users are advised to ensure their systems are up-to-date and to avoid opening unverified project files.

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Affected Version(s)

CODESYS Development System 0.0.0 < 3.5.21.40

References

https://certvde.com/de/advisories/VDE-2025-101

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

MengyuXia from Beijing Aerospace Wanyuan Science & Technology Co, Ltd.
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