Siemens Analytics Toolkit

Summary

Multiple Siemens industrial applications including Simcenter, Solid Edge, and Tecnomatix are affected by CVE-2025-40745, an improper certificate validation flaw in the Analytics Toolkit that could allow unauthenticated remote attackers to perform man-in-the-middle attacks. The vulnerability affects critical manufacturing infrastructure worldwide. Siemens has released patched versions and recommends immediate updates to the latest software versions.

Full text

ICS Advisory Siemens Analytics Toolkit Release DateApril 21, 2026 Alert CodeICSA-26-111-04 Related topics: Industrial Control System Vulnerabilities, Industrial Control Systems View CSAF 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 Expand All + 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. View CVE Details 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 Remediations Vendor fixUpdate to V225.0 Update 13 or later versionhttps://support.sw.siemens.com/product/246738425/ Vendor fixUpdate to V226.0 Update 04 or later versionhttps://support.sw.siemens.com/product/246738425/ Vendor fixUpdate to V2504.0008 or later versionhttps://support.sw.siemens.com/product/297028302/ Vendor fixUpdate to V2506.0002 or later versionhttps://support.sw.siemens.com/product/275652363/ Vendor fixUpdate to V2506.6000 or later versionhttps://support.sw.siemens.com/product/289054037/ Vendor fixUpdate to V2602 or later versionhttps://support.sw.siemens.com/product/226870983/ Vendor fixUpdate to V3.5.8.2 or later versionhttps://www.sw.siemens.com/en-US/siemens-software-center/ Relevant CWE: CWE-295 Improper Certificate Validation Metrics CVSS Version Base Score Base Severity Vector String 3.1 3.7 LOW CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N 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 Legal Notice and Terms of Use This product is provided subject to this Notification and this Privacy & Use policy. Vendor Siemens Tags Sector: Critical Manufacturing Sector Topics: Industrial Control System Vulnerabilities, Industrial Control Systems Please share your thoughts We recently updated our anonymous product survey; we welcome your feedback. Related Advisories Apr 21, 2026 ICS Advisory | ICSA-26-111-05 Hardy Barth Salia EV Charge Controller Apr 21, 2026 ICS Advisory | ICSA-26-111-02 Siemens RUGGEDCOM CROSSBOW Secure Access Manager Primary Apr 21, 2026 ICS Advisory | ICSA-26-111-03 Siemens SINEC NMS Apr 21, 2026 ICS Advisory | ICSA-26-111-12 SenseLive X3050

Indicators of Compromise

• cve — CVE-2025-40745

Entities