Summary
Multiple Siemens applications are affected by improper certificate validation in Siemens Analytics Toolkit. This could allow an unauthenticated remote attacker to perform man in the middle attacks. Siemens has released new versions for the affected products and recommends to update to the latest versions.
The following versions of Siemens Analytics Toolkit are affected:
- Siemens Software Center vers:intdot/<3.5.8.2 (CVE-2025-40745)
- Simcenter 3D vers:intdot/<2506.6000 (CVE-2025-40745)
- Simcenter Femap vers:intdot/<2506.0002 (CVE-2025-40745)
- Simcenter STAR-CCM+ vers:intdot/<2602 (CVE-2025-40745)
- Solid Edge SE2025
- Solid Edge SE2026
- Tecnomatix Plant Simulation vers:intdot/<2504.0008 (CVE-2025-40745)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 3.7 | Siemens | Siemens Analytics Toolkit | Improper Certificate Validation |
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: Germany
Vulnerabilities
CVE-2025-40745
Affected applications do not properly validate client certificates to connect to Analytics Service endpoint. This could allow an unauthenticated remote attacker to perform man in the middle attacks.
Affected Products
Siemens Analytics Toolkit
Vendor:
Siemens
Product Version:
Siemens Software Center, Simcenter 3D, Simcenter Femap, Simcenter STAR-CCM+, Solid Edge SE2025, Solid Edge SE2026, Tecnomatix Plant Simulation
Product Status:
known_affected
Relevant CWE: CWE-295 Improper Certificate Validation
Metrics
Acknowledgments
- Siemens ProductCERT reported this vulnerability to CISA.
General Recommendations
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens’ operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities.
Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Advisory Conversion Disclaimer
This ICSA is a verbatim republication of Siemens ProductCERT SSA-981622 from a direct conversion of the vendor’s Common Security Advisory Framework (CSAF) advisory. This is republished to CISA’s website as a means of increasing visibility and is provided “as-is” for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Siemens ProductCERT directly for any questions regarding this advisory.
Revision History
- Initial Release Date: 2026-04-14
| Date | Revision | Summary |
|---|---|---|
| 2026-04-14 | 1 | Publication Date |
| 2026-04-21 | 2 | Initial CISA Republication of Siemens ProductCERT SSA-981622 advisory |