Beckhoff: XSS Vulnerability in TwinCAT 3 HMI Server
Priority LOW 24CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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').
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00246 15th percentileScored 2026-11-07
Fix Fixed TwinCAT.HMI.Server (Beckhoff Automation): 14.4.267TF2000-HMI-Server (Beckhoff Automation): 14.4.267+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Beckhoff Automation | TwinCAT.HMI.Server | 0.0.0 to before 14.4.267 | 14.4.267 | Patch available | CNA |
| Beckhoff Automation | TF2000-HMI-Server | 0.0.0 to before 14.4.267 | 14.4.267 | Patch available | CNA |
| Beckhoff Automation | tf2000-hmi-server | 0.0.0 to before 14.4.267 | 14.4.267 | Patch available | CNA |
- TwinCAT.HMI.Server VendorBeckhoff Automation Affected 0.0.0 to before 14.4.267 Fixed in 14.4.267 Patch available CNA
- TF2000-HMI-Server VendorBeckhoff Automation Affected 0.0.0 to before 14.4.267 Fixed in 14.4.267 Patch available CNA
- tf2000-hmi-server VendorBeckhoff Automation Affected 0.0.0 to before 14.4.267 Fixed in 14.4.267 Patch available CNA
Remediation
- Fix · CNA TwinCAT.HMI.Server (Beckhoff Automation) Fixed in 14.4.267
- Fix · CNA TF2000-HMI-Server (Beckhoff Automation) Fixed in 14.4.267
- Fix · CNA tf2000-hmi-server (Beckhoff Automation) Fixed in 14.4.267
Timeline
- 2026-10-02 Threatist record created from CVE-2025-41768
- 2026-10-03 Alias added: GHSA-hrmx-9vmm-xj23
References
More Beckhoff Automation vulnerabilities
- TI-2025-27690 Beckhoff: Information leak via Beckhoff Device Manager CVSS 3.1MEDIUM 5.3
- TI-2025-27688 Beckhoff: Arbitrary code execution within privileged processes CVSS 3.1HIGH 8.8
- TI-2025-27689 Beckhoff: Performing privileged operations and gaining administrator access CVSS 3.1HIGH 7.8
Sources
- CVE-2025-41768 · CVE Program
- CVE-2025-41768 · NVD
- FIRST EPSS
- GHSA-hrmx-9vmm-xj23 · GitHub Advisory Database · CC BY 4.0
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