Schneider Electric IGSS Vulnerability Advisory
Schneider Electric IGSS Vulnerability Advisory 🚨
Date Published: July 30, 2026
Schneider Electric is aware of a vulnerability in its IGSS Definition module for the IGSS (Interactive Graphical SCADA System) product. The IGSS product is a state-of-the-art SCADA system used for monitoring and controlling industrial processes. The IGSS Definition module is a design-time component used by system integrators to create mimic diagrams for plant personnel, enabling them to monitor and control the SCADA system.
Key Issues:
- Failure to apply the remediation provided may risk loss of data or arbitrary code execution, which could result in the loss of control of the system.
- An out-of-bounds write vulnerability, identified as CVE-2026-12927, exists that could cause loss of data or potentially risk arbitrary code execution when a malicious CGF file is imported to IGSS Definition.
- The relevant CWE for this issue is CWE-787 Out-of-bounds Write.
Affected Versions:
- IGSS Definition (Def.exe) module versions: <= 18.0.0.26124, 18.0.0.26125.
Impact: This vulnerability impacts Critical Infrastructure Sectors including Commercial Facilities, Critical Manufacturing, and Energy, and is deployed worldwide.
Remediation: Version 18.0.0.26125 of the IGSS Definition module includes a fix for this vulnerability and is available for download through IGSS Master > Update IGSS Software or here.
If customers choose not to apply the remediation provided above, they should immediately apply the following mitigations to reduce the risk of exploit:
- Avoid executing commands, importing, or opening files from untrusted sources.
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).
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
For more information, you can read the complete article here.