Schneider Electric EcoStruxure Machine SCADA Expert & Pro-face BLUE Open Studio

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1. EXECUTIVE SUMMARY CVSS v4 8.3 ATTENTION: Low Attack Complexity Vendor: Schneider Electric Equipment: EcoStruxure Machine SCADA Expert & Pro-face BLUE Open Studio Vulnerability: Use of a Broken or Risky Cryptographic Algorithm
2. RISK EVALUATION Successful exploitation of this vulnerability could lead to loss of confidentiality and integrity.
3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Schneider Electric reports that the following products use an affected AVEVA component: EcoStruxure Machine SCADA Expert: Versions prior to 2023.1 Patch 1 Pro-face BLUE Open Studio: Versions prior to 2023.1 Patch 1 3.2 VULNERABILITY OVERVIEW 3.2.1 Use of a Broken or Risky Cryptographic Algorithm CWE-327 The vulnerability disclosed by AVEVA Group Limited impacts the affected Schneider Electric software. Additional information about the vulnerabilities can be found in the AVEVA advisory AVEVA-2025-006. The vulnerability, if exploited, could allow a attacker with read access to Edge project files or Edge offline cache files to reverse engineer Edge users’ app-native or active directory passwords through computational brute-forcing of weak hashes. CVE-2025-9317 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.4 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N). A CVSS v4 score has also been calculated for CVE-2025-9317. A base score of 8.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Critical Manufacturing, Energy COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: France 3.4 RESEARCHER Schneider Electric reported this vulnerability to CISA.
4. MITIGATIONS Schneider Electric has identified the following specific remediations users can apply to reduce risk: Version 2023.1 Patch 1 of EcoStruxure Machine SCADA Expert includes a fix for this vulnerability and is available for download. For additional details please refer to the supplied readme help file in Version 2023.1 Patch 1. Version 2023.1 Patch 1 of Pro-face BLUE Open Studio includes a fix for this vulnerability and is available for download. For additional details please refer to the supplied release notes file in Version 2023.1 Patch 1. If users choose not to apply the remediations provided above, they should immediately apply the following mitigations to reduce the risk of exploitation: Access control lists should be applied to all folders where users will save and load project files. Maintain a trusted chain-of-custody on project files during creation, modification, distribution, backup, and use. Apply data-protection at the project level with a strong master password. For step-by-step configuration instructions, refer to “Technical Reference Manual” > Project Overview > Configuring Additional Project Settings > Options Tab > Data Protection. If passwords are being used as function parameters inside project documents (such as scripts or worksheets), it is recommended to remove those passwords and use project tags instead. For more information on tags refer to “Technical Reference Manual” > Tags and the Tag Database > About Tags and the Project Database. For more information see the associated Schneider Electric security advisory SEVD-2025-315-02 EcoStruxure Machine SCADA Expert & Pro-face BLUE Open Studio - PDF Version The CSAF version is available here. Schneider Electric strongly recommends 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 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 document. CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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. No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.
5. UPDATE HISTORY November 18, 2025: Initial Republication of Schneider Electric SEVD-2025-315-02