CVE-2025-41768

Beckhoff TwinCAT.HMI.Server — vulnerability CVE-2025-41768

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').

CVSS 5.5Patch available

This record: live connection— last retrieved: 7 November 2026 at 14:22.

Vendor

Beckhoff

Products

TwinCAT.HMI.Server, TF2000-HMI-Server, TF2000-HMI-Server

up to version vers:npm/<14.4.267

Published

20 January 2026

Last modified

17 June 2026

Original source information

Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.

Technical description

CVSS 3.1 — vector details

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Attack vector

NETWORK

Privileges required

HIGH

User interaction

NONE

Confidentiality

Limited

Integrity

Limited

Availability

None

EPSS — Exploit Prediction Scoring System

Probability of exploitation within 30 days

0.2%

Percentile

16e

Source: FIRST.org, updated on 6 November 2026.

Patch information

Please update to a recent version of the affected components.

IACS Radar assessment

Our own interpretation and context for the source data above.

IACS Radar assessment

Our own interpretation and context for this vulnerability — not an official source.

IACS Radar priority score

46/ 100

Based on CVSS 5.5, EPSS 0.2%, industrial relevance 75/100.

Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.

Conditions for exploitation

•Network access to the affected device or segment is required.
•Limited user privileges are required.
•No user interaction required.

Operational impact & energy relevance

Limited impact on availability; the risk lies mainly with confidentiality or integrity of process data.

Assessed as relevant to the energy sector based on: Vermeld in een officiële CISA ICS Advisory, wat directe relevantie voor industriële besturingssystemen bevestigt. Productbeschrijving komt overeen met de categorie "HMI", een typisch OT/ICS-componenttype. Vendor "Beckhoff" is a known supplier of equipment for the energy sector. Sector indication recognised in the description: energieopwekking.

Recommended defensive measures

•Apply the latest firmware or software update and validate its integrity.
•Restrict network access to the affected device to a dedicated OT management segment.
•Implement network segmentation in line with zones and conduits (IEC 62443-3-2).
•Monitor for abnormal protocol traffic using an OT-aware detection system.

Industrial relevance score

75/ 100

• Mentioned in an official CISA ICS advisory, which confirms direct relevance to industrial control systems.
• Product description matches the category "HMI", a typical OT/ICS component type.
• Vendor "Beckhoff" is a known supplier of equipment for the energy sector.
• Sector indication recognised in the description: energieopwekking.

Automatically classified as industrially relevant based on CISA/NVD signals (see reasons).

Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 7 November 2026.

IEC 62443 mapping

IEC 62443-4-1FR3 · Systeemintegriteit

Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.

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