Out-of-Bounds Write vulnerability in IGSS
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.
AI Analysis
Technical Summary
CVE-2026-12927 describes an out-of-bounds write vulnerability in Schneider Electric's IGSS product affecting versions up to 18.0.0.26124. The vulnerability involves improper memory handling that could lead to memory corruption. The vendor advisory does not provide a patch or official fix status. Mitigation guidance focuses on network segmentation, physical security, and controlled access to industrial control systems rather than a direct software update. There are no known exploits in the wild at the time of publication.
Potential Impact
The vulnerability could allow an attacker to write outside the intended memory bounds, potentially leading to system instability or unauthorized code execution. However, no active exploitation has been reported. The impact is relevant primarily to industrial control and safety systems using the affected versions of IGSS.
Mitigation Recommendations
No official patch or fix is currently confirmed. Users should follow Schneider Electric's recommended cybersecurity best practices, including isolating control networks behind firewalls, restricting physical access to control systems, avoiding unauthorized network connections, sanitizing removable media, minimizing network exposure, and using secure remote access methods such as VPNs. Monitor the vendor advisory for updates on patch availability.
Out-of-Bounds Write vulnerability in IGSS
Description
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.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12927 describes an out-of-bounds write vulnerability in Schneider Electric's IGSS product affecting versions up to 18.0.0.26124. The vulnerability involves improper memory handling that could lead to memory corruption. The vendor advisory does not provide a patch or official fix status. Mitigation guidance focuses on network segmentation, physical security, and controlled access to industrial control systems rather than a direct software update. There are no known exploits in the wild at the time of publication.
Potential Impact
The vulnerability could allow an attacker to write outside the intended memory bounds, potentially leading to system instability or unauthorized code execution. However, no active exploitation has been reported. The impact is relevant primarily to industrial control and safety systems using the affected versions of IGSS.
Mitigation Recommendations
No official patch or fix is currently confirmed. Users should follow Schneider Electric's recommended cybersecurity best practices, including isolating control networks behind firewalls, restricting physical access to control systems, avoiding unauthorized network connections, sanitizing removable media, minimizing network exposure, and using secure remote access methods such as VPNs. Monitor the vendor advisory for updates on patch availability.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Schneider Electric CPCERT
- Advisory Id
- SEVD-2026-195-01
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a55ff4968715ace432efba0
Added to database: 07/14/2026, 09:20:09 UTC
Last enriched: 07/14/2026, 09:22:33 UTC
Last updated: 07/14/2026, 10:27:30 UTC
Views: 2
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