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1. EXECUTIVE SUMMARY
- CVSS v4 8.4
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Schneider Electric
- Equipment: ConneXium Network Manager
- Vulnerabilities: Files or Directories Accessible to External Parties, Improper Input Validation
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to access sensitive data, escalate privileges, or perform remote code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Schneider Electric reports that the following products are affected:
- Schneider Electric ConneXium Network Manager: Version 2.0.01 (CVE-2025-2222)
- Schneider Electric ConneXium Network Manager: All versions (CVE-2025-2223)
3.2 VULNERABILITY OVERVIEW
3.2.1 FILES OR DIRECTORIES ACCESSIBLE TO EXTERNAL PARTIES CWE-552
CWE-552: Files or Directories Accessible to External Parties vulnerability over https exists that could leak information and potential privilege escalation following a Man-In-The-Middle attack.
CVE-2025-2222 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
A CVSS v4 score has also been calculated for CVE-2025-2222. A base score of 8.2 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).
3.2.2 IMPROPER INPUT VALIDATION CWE-20
CWE-20: Improper Input Validation vulnerability exists that could cause a loss of confidentiality, integrity, and availability of the engineering workstation when a malicious project file is loaded by a user from the local system.
CVE-2025-2223 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2025-2223. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/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 CPCERT reported these vulnerabilities to CISA.
4. MITIGATIONS
Schneider Electric has identified the following specific workarounds and mitigations users can apply to reduce risk:
Schneider Electric ConneXium Network Manager v2.0.01: Please note that the ConneXium Network Manager product has reached the end of its life and is no longer supported. Customers should immediately apply the following mitigations to reduce the risk of exploit:
- Disable the webserver (disabled by default)
- Follow workstation, network and site-hardening guidelines in the Recommended Cybersecurity Best Practices available for download here: https://www.se.com/ww/en/download/document/7EN52-0390/
Schneider Electric ConneXium Network Manager All versions: Please note that the ConneXium Network Manager product has reached the end of its life and is no longer supported. Customers should immediately apply the following mitigations to reduce the risk of exploit:
- Only open project files received from a trusted source.
- Compute a hash of the project files and regularly check the consistency of this hash to verify the integrity before usage.
- Encrypt project files when stored and restrict the access to only trusted users.
- When exchanging files over the network, use secure communication protocols.
- Follow workstation, network and site-hardening guidelines in the Recommended Cybersecurity Best Practices available for download here: https://www.se.com/ww/en/download/document/7EN52-0390/
For more information see the associated Schneider Electric CPCERT security advisory SEVD-2025-098-01 ConneXium Network Manager Software – SEVD-2025-098-01 PDF Version, ConneXium Network Manager Software – SEVD-2025-098-01 CSAF Version.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:
- Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
- Locate control system networks and remote devices behind firewalls and isolating them from business networks.
- When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the 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.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
- Do not click web links or open attachments in unsolicited email messages.
- Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
- Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
5. UPDATE HISTORY
- April 17, 2025: Initial Republication of Schneider Electric CPCERT SEVD-2025-098-01
