CVE-2021-22754
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 inIGSS Definition (Def.exe) V15.0.0.21140 and prior that could result in loss of data or remote code execution due to lack of proper validation of user-supplied data, when a malicious CGF 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 write vulnerability (CWE-787) exists in IGSS Definition (Def.exe) versions 15.0.0.21140 and prior. The vulnerability stems from insufficient validation of user-supplied data when importing CGF configuration files, allowing a specially crafted malicious CGF file to write data beyond allocated buffer boundaries.
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<= 15.0.0.21140CVSS 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 the Schneider Electric installation directory (commonly C:\Program Files\Schneider Electric\IGSS\ or C:\Program Files (x86)\Schneider Electric\IGSS\)Affected if Def.exe exists on the system
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Check IGSS Definition versionRight-click Def.exe, select Properties, then view the Details tab for Product Version, or use PowerShell: (Get-Item 'C:\Program Files\Schneider Electric\IGSS\Def.exe').VersionInfo.FileVersionAffected if Version is 15.0.0.21140 or lower, or if version cannot be determined but the file exists
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Verify CGF import capabilityCheck if the IGSS Definition module has CGF import functionality accessible through the File menu or command line options for importing configuration filesAffected if CGF file import feature is present and enabled in the installed version
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Identify CGF file processingReview system for any automated CGF import processes or scheduled tasks that import CGF files: check Windows Task Scheduler for IGSS-related tasks and look for .cgf file extensions in import foldersAffected if CGF files from untrusted or external sources are being processed by the system
If IGSS Definition (Def.exe) version 15.0.0.21140 or lower is installed and the system imports or processes CGF configuration files, the environment is potentially affected by CVE-2021-22754.
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 dataUsers should avoid importing CGF files from untrusted sources until Schneider Electric releases an official patch. Organizations should implement file scanning and sandboxing for any CGF file imports in the meantime.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-22754 — 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-2021-22754 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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