CVE-2020-7553
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 · high confidenceA CWE-787 Out-of-bounds Write vulnerability in IGSS Definition (Def.exe) version 14.0.0.20247 allows remote code execution when a malicious CGF (Configuration Group File) is imported. The vulnerability stems from improper bounds checking during CGF file parsing, leading to memory corruption that can be exploited to execute arbitrary code.
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 installation directories such as C:\Program Files\Schneider Electric\IGSS\ or C:\Program Files (x86)\Schneider Electric\IGSS\, or use the command: dir /s C:\Def.exeAffected if IGSS Definition software is found on the system
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Verify installed version of Def.exeRight-click Def.exe, select Properties, then view the Details tab to find the File Version. Alternatively, run: powershell (Get-Item 'C:\Program Files\Schneider Electric\IGSS\Def.exe').VersionInfoAffected if The displayed version is 14.0.0.20247 or lower
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Confirm CGF import functionality existsLaunch IGSS Definition (Def.exe) and navigate to the menu options for importing Configuration Group Files, typically found under File > Import > CGF or a similar import wizardAffected if The CGF import feature is present and accessible in the application
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Identify CGF files on the systemSearch for .cgf files in IGSS working directories: dir /s C:\*.cgf or check within the project/data folders where IGSS stores configuration filesAffected if Untrusted or unknown CGF files are present in IGSS directories
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Review recent CGF import activityCheck IGSS audit logs or event logs for recent CGF import operations, typically located in the IGSS logs folder or Windows Event Viewer under Application logsAffected if There are records of recent CGF imports from unverified sources
A user is affected if IGSS Definition (Def.exe) version 14.0.0.20247 or lower is installed AND the CGF import feature is accessible on the system.
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 dataUpgrade IGSS Definition to the vendor-patched version. Until patched, restrict CGF file imports to only trusted, verified files and consider network segmentation to limit exposure.
- Consultation2.0 h
- Implementation1.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-7553 — 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-2020-7553 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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