CVE-2020-7550
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-119 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 and prior 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-119 buffer overflow vulnerability exists in IGSS Definition (Def.exe) versions 14.0.0.20247 and prior. The vulnerability is triggered when importing a maliciously crafted CGF (Configuration Group File), allowing an attacker to achieve Remote Code Execution via memory corruption.
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.
-
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\. Also check for IGSS Definition in the Windows Start Menu or Programs list.Affected if IGSS Definition (Def.exe) is found on the system
-
Identify installed version of Def.exeRight-click Def.exe, select Properties, and check the Details tab for the File Version. Alternatively, right-click the file, select Properties, go to the Version tab, or use PowerShell: Get-Item 'C:\Program Files\Schneider Electric\IGSS\Def.exe' | Select-Object VersionInfo.Affected if The file version is 14.0.0.20247 or lower
-
Confirm IGSS SCADA platform is runningCheck if the IGSS SCADA service (igsssc.exe or igss.exe) is running via Services.msc or Task Manager. The vulnerability affects the IGSS Definition tool used within the IGSS SCADA environment.Affected if IGSS SCADA services or processes are actively running alongside Def.exe
-
Assess CGF import exposureOpen IGSS Definition (Def.exe) and verify if the CGF import feature is accessible. Check if users can import files through the application interface, typically via File > Import or a similar menu option.Affected if CGF file import functionality is available and accessible to users
A system is affected if IGSS Definition (Def.exe) version 14.0.0.20247 or lower is installed and the CGF import feature is accessible to users who could import untrusted files.
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 dataUpdate IGSS Definition to a version beyond 14.0.0.20247. Until patched, disable or restrict CGF file imports from untrusted sources and implement file validation at the network perimeter.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-7550 — 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-2020-7550 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data