CVE-2020-35566
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 · uneditedAn issue was discovered in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2. An attacker can read arbitrary JSON files via Local File Inclusion.
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 confidenceLocal File Inclusion (LFI) vulnerability in mbCONNECT24/myREX24 web interfaces allows unauthenticated attackers to read arbitrary JSON files on the server by manipulating file path parameters, potentially exposing sensitive configuration data, credentials, or system information.
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<= 2.11.2<= 2.11.2<= 2.11.2<= 2.11.2CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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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Identify product versionAccess the web interface admin panel or check the system documentation for the installed version of mbCONNECT24 or myREX24. Look for version information typically found in the About section, system settings, or login page footer.Affected if The installed version is 2.11.2 or earlier.
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Confirm web interface is accessibleVerify the web-based management interface is reachable by accessing the application's URL over HTTP/HTTPS.Affected if The web interface is exposed and reachable.
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Check network exposureDetermine if the web interface is accessible from untrusted networks (internet-facing) or restricted to internal networks only by reviewing firewall rules or network configuration.Affected if The web interface is accessible from untrusted/internet-facing networks without proper access controls.
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Test LFI parameter (authorized assessment only)If you have authorization, attempt a controlled test by submitting a request with a manipulated path parameter (e.g., ../../../../etc/passwd or ../../../../Windows/win.ini) to the JSON file endpoint to verify if arbitrary file reading is possible.Affected if The application returns file contents from paths outside the intended directory, confirming the LFI vulnerability is present.
You are affected if the installed version is 2.11.2 or earlier, the web interface is accessible, and the LFI parameter allows reading arbitrary files outside the intended directory.
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 to version v2.11.2 or later. Additionally, implement strict input validation and restrict file access permissions to prevent unauthorized file access.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-35566 — 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-2020-35566 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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