PT-2026-3546 · Beckhoff Automation · Twincat 3 Hmi Server

Published 2026-01-20 · Updated 2026-01-20 · CVE-2025-41768

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions TwinCAT 3 HMI Server (affected versions not specified)

Description An authenticated administrator can inject arbitrary content into the custom CSS field within TwinCAT 3 HMI Server. This injected content is saved on the device and subsequently returned through the login page and error page. The issue involves the ability to modify the visual presentation of these pages, potentially leading to phishing or other malicious activities.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-41768

Affected Products

Twincat 3 Hmi Server

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-41768 · Security Note
• https://t.me/CVEtracker/42605 · Telegram Post
• https://t.me/cveNotify/149254 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2013685241966116914 · Twitter Post
• https://twitter.com/CVEnew/status/2013536599905018299 · Twitter Post
• https://certvde.com/de/advisories/VDE-2025-106 · Note