CVE-2019-6836
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-863: Incorrect Authorization vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server, MEG6501-0002 - U.motion KNX Server Plus, MEG6260-0410 - U.motion KNX Server Plus, Touch 10, MEG6260-0415 - U.motion KNX Server Plus, Touch 15), which could allow the file system to access the wrong file.
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 confidenceThis is a CWE-863 Incorrect Authorization vulnerability in Schneider Electric's U.motion Server line that allows the file system to access incorrect files. The vulnerability likely represents a path traversal or authorization bypass where the server fails to properly validate or restrict file access paths, potentially enabling attackers to read sensitive system files outside the intended directory.
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< 1.3.7< 1.3.7< 1.3.7< 1.3.7CVSS 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 U.motion Server modelAccess the device web interface or check the device label to determine if the model is Meg6501 or Meg6260. The model number is typically displayed in the web interface header or system information page.Affected if The model is one of: Meg6501 0001, Meg6501 0002, Meg6260 0410, or Meg6260 0415.
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Check firmware versionLog into the U.motion Server web interface and navigate to System > About or System > Information page to view the installed firmware version. Alternatively, check via CLI if SSH/Telnet access is available.Affected if The firmware version is lower than 1.3.7 (for example, 1.3.6, 1.3.5, 1.2.x, etc.).
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Verify web interface is accessibleAttempt to access the U.motion Server web interface over HTTP/HTTPS from a network-connected host using the device IP address.Affected if The web interface is reachable on the network and the device is running a vulnerable firmware version.
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Test for file system access vulnerabilityIf the above conditions are met, attempt to access a file outside the intended web root using the suspected path traversal endpoint. Common test paths include accessing /etc/passwd or system configuration files through the file download function.Affected if The device returns file content from paths outside the intended directory, confirming the vulnerability is present and exploitable.
A user is affected if they have a U.motion Server model Meg6501 or Meg6260 running firmware version lower than 1.3.7 with the web interface accessible on the network.
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 data1.3.7
Apply the vendor-provided security patch or firmware update for the affected U.motion Server models. If no patch is available, implement network segmentation to limit exposure and restrict file system permissions to mitigate unauthorized file access.
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-6836 — 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-2019-6836 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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