CVE-2020-7556
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution when malicious CGF (Configuration Group File) file is imported to IGSS Definition.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA CWE-787 Out-of-bounds Write vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247. The vulnerability is triggered when a malicious CGF (Configuration Group File) is imported into the application. Due to insufficient bounds checking during CGF file parsing, the application writes data beyond the boundaries of an allocated buffer, potentially allowing an attacker to achieve Remote Code Execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 14.0.0.20247CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Locate IGSS Definition executableSearch for Def.exe in typical installation directories such as C:\Program Files\Schneider Electric\IGSS\ or use system file search tools to find the executable.Affected if Def.exe is present on the system
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Determine Def.exe versionRight-click Def.exe, select Properties, then view the Details tab to find the File Version. Alternatively, right-click and select 'Properties' > 'Digital Signatures' to verify the Schneider Electric signature.Affected if The installed version is 14.0.0.20247 or lower (any version <= 14.0.0.20247)
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Verify CGF import functionality existsLaunch IGSS Definition and navigate to the file import or open menu options to confirm CGF file import capability is present and accessible within the application.Affected if The application includes CGF file import functionality and the user has access to import files
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Review recent CGF file importsCheck the IGSS project directories or recent file access logs for any CGF files that were imported, particularly from untrusted or external sources.Affected if CGF files from untrusted sources have been recently imported into the application
The system is affected if IGSS Definition (Def.exe) version 14.0.0.20247 or lower is installed and users have the ability to import CGF files, as the vulnerability is triggered during CGF file parsing.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataOrganizations should exercise caution when importing CGF files, ensuring only files from trusted sources are used. Consider implementing additional validation layers for file imports and monitor vendor updates for patches addressing this vulnerability.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-7556 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-7556 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
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- Version or environment caveats, and links to real fixes
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