CVE-2020-7557
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-125 Out-of-bounds Read 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 · high confidenceAn out-of-bounds read vulnerability (CWE-125) exists in IGSS Definition (Def.exe) version 14.0.0.20247 when parsing malformed CGF (Configuration Group File) files. The vulnerability allows reading memory beyond allocated buffers during file import, which could potentially be leveraged for remote code execution through careful manipulation of the file format.
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 installationSearch for Def.exe in typical Schneider Electric IGSS installation directories, commonly under C:\Program Files\Schneider Electric\IGSS\ or check the system for IGSS Definition application.Affected if Def.exe is found on the system
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Check Def.exe versionRight-click Def.exe, select Properties, and view the File Version field. Alternatively, use the command: dir "<path>\Def.exe" /s to locate it, then right-click for properties or use a version info tool.Affected if The reported file version is 14.0.0.20247 or any version lower than 14.0.0.20247
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Verify CGF import capability existsLaunch IGSS Definition (Def.exe) and navigate to the file import or open function. Look for CGF (Configuration Group File) as an available file type in the import dialog.Affected if CGF file type is listed as an import option and the import feature is accessible
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Inspect recent CGF file importsCheck the IGSS project directory for recently imported .cgf files, or review audit logs if enabled, to determine if malformed CGF files have been processed.Affected if Any CGF files have been imported into the IGSS Definition environment
The environment is affected if IGSS Definition (Def.exe) version 14.0.0.20247 or earlier is installed and the CGF file import feature is accessible and has been used.
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 dataAvoid importing CGF files from untrusted sources. Apply any available vendor patches for IGSS Definition. If no patch is available, consider disabling or restricting the CGF import functionality until a fix can be implemented.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-7557 — 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-2020-7557 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
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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