Successful exploitation of this vulnerability could provide other authenticated users with potentially inappropriate access to TGML diagrams.
Schneider Electric reports the following products are affected:
A resource exposure vulnerability exists that exposes TGML diagram resources to unauthorized control, allowing other authenticated users unauthorized access to TGML diagrams.
CVE-2025-6788 has been assigned to this vulnerability. A CVSS v3.1 base score of 4.3 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
A CVSS v4 score has also been calculated for CVE-2025-6788. A base score of 5.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N).
Schneider Electric reported this vulnerability to CISA.
Schneider Electric has identified the following specific remediations users can apply to reduce risk:
Contact Schneider Electric's Customer Care Center to download these hotfixes.
Schneider Electric recommends users employ appropriate patching methodologies when applying these patches to their systems. They strongly recommend making backups and evaluating the impact of these patches in a test and development environment or on offline infrastructure. Contact Schneider Electric's Customer Care Center for assistance removing a patch.
If users choose not to apply the above-mentioned remediation, Schneider Electric recommends the immediate removal of TGML diagrams from multi-tenant managed systems or on-premises systems and reverting to Vista diagrams.
For more information, see the associated Schneider Electric security advisory SEVD-2025-189-04: EcoStruxure Power Monitoring Expert (PME) and EcoStruxure Power Operation (EPO) with Advanced Reporting and Dashboards PDF version, CSAF version.
Schneider Electric strongly recommends adhering to the following industry cybersecurity best practices:
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.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.