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View CSAF Summary Multiple SICAM 8 products are affected by multiple vulnerabilities that could lead to denial of service, namely: - SICAM A8000 Device firmware - CPCI85 for CP-8031/CP-8050 - SICORE for CP-8010/CP-8012 - RTUM85 for CP-8010/CP-8012 - SICAM EGS Device firmware - CPCI85 - SICAM S8000 - SICORE - RTUM85 Siemens has released new versions for the affected products and recommends to update to the latest versions. The following versions of Siemens SICAM 8 Products are affected: CPCI85 Central Processing/Communication vers:intdot/<26.10 (CVE-2026-27663, CVE-2026-27664) RTUM85 RTU Base vers:intdot/<26.10 (CVE-2026-27663) SICORE Base system vers:intdot/<26.10.0 (CVE-2026-27664) CVSS Vendor Equipment Vulnerabilities v3 7.5 Siemens Siemens SICAM 8 Products Allocation of Resources Without Limits or Throttling, Out-of-bounds Write Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2026-27663 The affected application contains denial-of-service (DoS) vulnerability. The remote operation mode is susceptible to a resource exhaustion condition when subjected to a high volume of requests. Sending multiple requests can exhaust resources, preventing parameterization and requiring a reset or reboot to restore functionality. View CVE Details Affected Products Siemens SICAM 8 Products Vendor: Siemens Product Version: CPCI85 Central Processing/Communication, RTUM85 RTU Base Product Status: known_affected Remediations Vendor fix Update to V26.10 or later version The firmware RTUM85 V26.10 is present within “CP-8010/CP-8012 Package” V26.10 https://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within “SICAM S8000 Package” V26.10 https://support.industry.siemens.com/cs/document/109818240 Vendor fix Update to V26.10 or later version The firmware CPCI85 V26.10 is present within “CP-8031/CP-8050 Package” V26.10 https://support.industry.siemens.com/cs/ww/en/view/109804985/ and also within “SICAM EGS Package” V26.10 https://support.industry.siemens.com/cs/document/109972536/ Relevant CWE: CWE-770 Allocation of Resources Without Limits or Throttling Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.5 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-27664 The affected application contains an out-of-bounds write vulnerability while parsing specially crafted XML inputs. This could allow an unauthenticated attacker to exploit this issue by sending a malicious XML request, which may cause the service to crash, resulting in a denial-of-service condition. View CVE Details Affected Products Siemens SICAM 8 Products Vendor: Siemens Product Version: CPCI85 Central Processing/Communication, SICORE Base system Product Status: known_affected Remediations Vendor fix Update to V26.10 or later version The firmware CPCI85 V26.10 is present within “CP-8031/CP-8050 Package” V26.10 https://support.industry.siemens.com/cs/ww/en/view/109804985/ and also within “SICAM EGS Package” V26.10 https://support.industry.siemens.com/cs/document/109972536/ Vendor fix Update to V26.10.0 or later version The firmware SICORE V26.10.0 is present within “CP-8010/CP-8012 Package” V26.10 https://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within “SICAM S8000 Package” V26.10 https://support.industry.siemens.com/cs/document/109818240 Relevant CWE: CWE-787 Out-of-bounds Write Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Acknowledgments T. Weber, S. Dietz, D. Blagojevic, and F. Koroknai of CyberDanube coordinated disclosure of CVE-2026-27663 S. Dietz of CyberDanube and VERBUND Digital Power coordinated disclosure of CVE-2026-27664 S. Dietz of Siemens ProductCERT reported these vulnerabilities to CISA. General Recommendations Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid's reliability can thus be minimized by virtue of the grid design. Siemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. As a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment. Recommended security guidelines can be found at: https://www.siemens.com/gridsecurity 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 this vulnerability. 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-246443 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: 2026-03-26 Date Revision Summary 2026-03-26 1 Publication Date 2026-04-02 2 Initial CISA Republication of Siemens ProductCERT SSA-246443 advisory Legal Notice and Terms of Use

View CSAF Summary Schneider Electric is aware of a vulnerability in its EcoStruxure™ Automation Expert product. The EcoStruxure™ Automation Expert product is plant automation software designed for digital control systems in discrete, hybrid and continuous industrial processes. A totally integrated automation solution designed to enhance your flexibility, efficiency and scalability. Failure to apply the remediation provided below may risk execution of arbitrary commands on the engineering workstation, which could result in a potential compromise of full system. The following versions of Schneider Electric EcoStruxure Automation Expert are affected: EcoStruxure™ Automation Expert vers:intdot/<25.0.1, 25.0.1 CVSS Vendor Equipment Vulnerabilities v3 8.2 Schneider Electric Schneider Electric EcoStruxure Automation Expert Improper Control of Generation of Code ('Code Injection') Background Critical Infrastructure Sectors: Commercial Facilities, Critical Manufacturing, Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: France Vulnerabilities Expand All + CVE-2026-2273 CWE-94: Improper Control of Generation of Code ('Code Injection') vulnerability exist that could cause execution of untrusted commands on the engineering workstation which could result in a limited compromise of the workstation and a potential loss of Confidentiality, Integrity and Availability of the subsequent system when an authenticated user opens a malicious project file. View CVE Details Affected Products Schneider Electric EcoStruxure Automation Expert Vendor: Schneider Electric Product Version: EcoStruxure™ Automation Expert Versions prior to v25.0.1 Product Status: fixed, known_affected Remediations Vendor fix Version v25.0.1 of EcoStruxure™ Automation Expert includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/23643079-ecostruxure-automation-expert/ https://www.se.com/ww/en/product-range/23643079-ecostruxure-automation-expert/ Mitigation If customers choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit: Solution and archive files must be stored within the user’s home directory or in any location protected by appropriate Windows file‑system access controls to prevent unauthorized access in multi‑user environments. Users who choose to store files outside their home directory are responsible for applying restrictive Windows permissions to secure those locations. Before opening any solution or archive file, users are required to verify its authenticity and ensure that it has not been modified by unauthorized users. For detailed mitigation steps, refer to the User Manual - https://product-help.se.com/EcoStruxure%20Automation%20Expert/25.0/Offer%20Guides/en-US/EAE_UM?t=EAE_UM%2FSolutionIntegrity-FE037ED3.html%3Frhhlterm%3Dundefined%253Frhsearch%253Dundefined&theme=Help https://product-help.se.com/EcoStruxure%20Automation%20Expert/25.0/Offer%20Guides/en-US/EAE_UM?t=EAE_UM%2FSolutionIntegrity-FE037ED3.html%3Frhhlterm%3Dundefined%253Frhsearch%253Dundefined&theme=Help Relevant CWE: CWE-94 Improper Control of Generation of Code ('Code Injection') Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.2 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H Acknowledgments Schneider Electric CPCERT reported this vulnerability to CISA. Raffaele Bova of Nozomi Networks reported this vulnerability to Schneider Electric. General Security Recommendations We strongly recommend the following industry cybersecurity best practices. * Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network. * Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks. * Place all controllers in locked cabinets and never leave them in the “Program” mode. * Never connect programming software to any network other than the network intended for that device. * Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks. * Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation. * Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet. * When remote access is required, use secure methods, such as Virtual Private Networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices. For more information refer to the Schneider Electric [Recommended Cybersecurity Best Practices](https://www.se.com/us/en/download/document/7EN52-0390/) document. For More Information This document provides an overview of the identified vulnerability or vulnerabilities and actions required to mitigate. For more details and assistance on how to protect your installation, contact your local Schneider Electric representative or Schneider Electric Industrial Cybersecurity Services: https://www.se.com/ww/en/work/solutions/cybersecurity/. These organizations will be fully aware of this situation and can support you through the process. For further information related to cybersecurity in Schneider Electric's products, visit the company's cybersecurity support portal page: https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp LEGAL DISCLAIMER THIS NOTIFICATION DOCUMENT, THE INFORMATION CONTAINED HEREIN, AND ANY MATERIALS LINKED FROM IT (COLLECTIVELY, THIS “NOTIFICATION”) ARE INTENDED TO HELP PROVIDE AN OVERVIEW OF THE IDENTIFIED SITUATION AND SUGGESTED MITIGATION ACTIONS, REMEDIATION, FIX, AND/OR GENERAL SECURITY RECOMMENDATIONS AND IS PROVIDED ON AN “AS-IS” BASIS WITHOUT WARRANTY OR GUARANTEE OF ANY KIND. SCHNEIDER ELECTRIC DISCLAIMS ALL WARRANTIES RELATING TO THIS NOTIFICATION, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SCHNEIDER ELECTRIC MAKES NO WARRANTY THAT THE NOTIFICATION WILL RESOLVE THE IDENTIFIED SITUATION. IN NO EVENT SHALL SCHNEIDER ELECTRIC BE LIABLE FOR ANY DAMAGES OR LOSSES WHATSOEVER IN CONNECTION WITH THIS NOTIFICATION, INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF SCHNEIDER ELECTRIC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. YOUR USE OF THIS NOTIFICATION IS AT YOUR OWN RISK, AND YOU ARE SOLELY LIABLE FOR ANY DAMAGES TO YOUR SYSTEMS OR ASSETS OR OTHER LOSSES THAT MAY RESULT FROM YOUR USE OF THIS NOTIFICATION. SCHNEIDER ELECTRIC RESERVES THE RIGHT TO UPDATE OR CHANGE THIS NOTIFICATION AT ANY TIME AND IN ITS SOLE DISCRETION About Schneider Electric Schneider's purpose is to create Impact by empowering all to make the most of our energy and resources, bridging progress and sustainability for all. We call this Life Is On. Our mission is to be the trusted partner in Sustainability and Efficiency. We are a global industrial technology leader bringing world-leading expertise in electrification, automation and digitization to smart industries, resilient infrastructure, future-proof data centers, intelligent buildings, and intuitive homes. Anchored by our deep domain expertise, we provide integrated end-to-end lifecycle AI enabled Industrial IoT solutions with connected products, automation, software and services, delivering digital twins to enable profitable growth for our customers. We are a people company with an ecosystem of 150,000 colleagues and more than a million partners operating in over 100 countries to ensure proximity to our customers and stakeholders. We embrace diversity and inclusion in everything we do, guided by our meaningful purpose of a sustainable future for all. www.se.com 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 Schneider Electric CPCERT SEVD-2026-069-04 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 Schneider Electric CPCERT directly for any questions regarding this advisory. Revision History Initial Release Date: 2026-03-10 Date Revision Summary 2026-03-10 1 Original Release 2026-03-19 2 Initial CISA Republication of Schneider Electric CPCERT SEVD-2026-069-04 advisory Legal Notice and Terms of Use