CVE-2020-7555
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 confidenceAn out-of-bounds write vulnerability (CWE-787) exists in IGSS Definition (Def.exe) version 14.0.0.20247. The vulnerability is triggered when importing a malicious CGF (Configuration Group File) file, allowing an attacker to write data beyond allocated buffer boundaries. This memory corruption can lead to arbitrary code execution on the affected system.
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 paths such as C:\Program Files\Schneider Electric\IGSS\Definition\ or use 'where Def.exe' from an elevated command promptAffected if Def.exe exists on the system and the version is 14.0.0.20247 or lower
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Check Def.exe versionRight-click Def.exe, select Properties, then Details to view the File Version; or run 'Get-Item -Path "C:\Program Files\Schneider Electric\IGSS\Definition\Def.exe" | Select-Object VersionInfo' in PowerShellAffected if The file version is 14.0.0.20247 or any version lower than this (the vulnerability affects versions at or below this build)
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Identify if CGF import feature is accessibleOpen IGSS Definition and navigate to the CGF import function typically found under File > Import or a dedicated CGF import menu optionAffected if The CGF import functionality is present and accessible to users
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Detect recent CGF file importsCheck the IGSS project directory for recently modified .cgf files or review application logs for import events; use 'Get-ChildItem -Path "C:\Program Files\Schneider Electric\IGSS\*" -Filter "*.cgf" -Recurse -ErrorAction SilentlyContinue | Select-Object FullName, LastWriteTime'Affected if CGF files have been imported into the IGSS Definition environment
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Verify user privilege contextCheck which user accounts have access to IGSS Definition and the ability to import CGF files by reviewing local group memberships or domain permissions for users with Def.exe accessAffected if Users with import privileges include accounts that could receive malicious CGF files from untrusted sources
A 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 into the application.
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 or unknown sources into IGSS Definition. Apply vendor-provided patches when released. Implement file validation and consider network segmentation for systems running IGSS Definition.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-7555 — 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-2020-7555 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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- Version or environment caveats, and links to real fixes
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