CVE-2025-41768
Beckhoff: XSS Vulnerability in TwinCAT 3 HMI Server
Description
On an instance of TwinCAT 3 HMI Server running on a device an authenticated administrator can inject arbitrary content into the custom CSS field which is persisted on the device and later returned via the login page and error page.
INFO
Published Date :
Jan. 20, 2026, 9:15 a.m.
Last Modified :
Jan. 20, 2026, 9:15 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-41768
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 270ccfa6-a436-4e77-922e-914ec3a9685c | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Sanitize all user-supplied CSS content.
- Validate CSS input before saving.
- Limit CSS field to safe values only.
- Review TwinCAT 3 HMI Server documentation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-41768.
| URL | Resource |
|---|---|
| https://certvde.com/de/advisories/VDE-2025-106 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-41768 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-41768
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-41768 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-41768 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jan. 20, 2026
Action Type Old Value New Value Added Description On an instance of TwinCAT 3 HMI Server running on a device an authenticated administrator can inject arbitrary content into the custom CSS field which is persisted on the device and later returned via the login page and error page. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://certvde.com/de/advisories/VDE-2025-106