CVE-2025-41768

Beckhoff: XSS Vulnerability in TwinCAT 3 HMI Server

State: Published
Severity: 5.5 Medium
Published: Jan 20, 2026
Updated: Feb 12, 2026
Reserved: Apr 16, 2025

Description

An high privileged remote attacker can inject arbitrary content into the custom CSS field on the affected devices due to improper neutralization of input during web page generation ('Cross-site Scripting').

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N	CERTVDE

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
TwinCAT.HMI.ServerBeckhoff Automation	0.0.0 to before 14.4.267Affected
TF2000-HMI-ServerBeckhoff Automation	0.0.0 to before 14.4.267Affected
tf2000-hmi-serverBeckhoff Automation	0.0.0 to before 14.4.267Affected

References

https://certvde.com/de/advisories/VDE-2025-106

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