CVE-2026-12927

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BaseFortify

Publication date: 2026-07-29

Last updated on: 2026-07-30

Assigner: Schneider Electric SE

Description

CWE-787 Out-of-bounds write vulnerability exists that could cause loss of data or potentially risk arbitrary code execution when a malicious CGF file is imported to IGSS Definition.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-29

Last Modified

2026-07-30

Generated

2026-10-19

AI Q&A

2026-07-30

EPSS Evaluated

2026-10-18

NVD

CVE-2026-12927

Affected Vendors & Products

Vendor	Product	Version / Range
Schneider	Electric	IGSS Definition (Def.exe) Version 18.0.0.26124 and prior

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds write vulnerability (CWE-787) that occurs when a malicious CGF file is imported into IGSS Definition. It allows an attacker to write data outside the intended memory buffer, potentially leading to data loss or arbitrary code execution.

Detection Guidance

This vulnerability involves an out-of-bounds write issue in IGSS Definition when processing malicious CGF files. Detection requires monitoring for unexpected file imports or crashes during CGF file handling. Check system logs for IGSS-related errors or crashes after importing CGF files. Use file integrity monitoring tools to detect unauthorized changes to IGSS configuration files.

Impact Analysis

The vulnerability could allow an attacker to execute arbitrary code on your system, leading to unauthorized access, data corruption, or system crashes. It may also result in loss of sensitive data if exploited.

Compliance Impact

The vulnerability allows arbitrary code execution or data loss when a malicious CGF file is imported, which could lead to unauthorized access or data breaches. This may violate GDPR's integrity and confidentiality requirements or HIPAA's safeguards for protected health information if exploited.

Mitigation Strategies

Apply vendor patches or updates for IGSS Definition software immediately. Disable import of CGF files from untrusted sources until patched. Monitor system logs for unusual activity related to file imports.

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