CVE-2025-41700

CODESYS Development System - Deserialization of Untrusted Data

State: Published
Severity: 7.8 High
Published: Dec 1, 2025
Updated: Dec 1, 2025
Reserved: Apr 16, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CERTVDE

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
CODESYS Development SystemCODESYS	0.0.0 to before 3.5.21.40Affected

References

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

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