CVE-2020-10607
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 · uneditedIn Advantech WebAccess, Versions 8.4.2 and prior. A stack-based buffer overflow vulnerability caused by a lack of proper validation of the length of user-supplied data may allow remote code execution.
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 stack-based buffer overflow vulnerability in Advantech WebAccess versions 8.4.2 and prior allows remote code execution due to insufficient validation of user-supplied data length before copying it into a fixed-size buffer on the stack.
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<= 8.4.2CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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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Confirm Advantech WebAccess installationCheck for the presence of Advantech WebAccess by looking for its installation directory (typically under C:\Program Files\Advantech\WebAccess or C:\inetpub\wwwroot\BroadWeb) or by searching for the 'WebAccess' service in Windows ServicesAffected if Advantech WebAccess software is found on the system
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Identify installed WebAccess versionLocate the version information in the WebAccess installation - check the version file or executable properties, typically found in the main WebAccess installation folder, or access it via the web interface login page which often displays version detailsAffected if The installed version is 8.4.2 or any version prior to 8.4.2
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Verify the web service is exposedConfirm that the Advantech WebAccess web service is running and accessible on the network by checking if port 80 or 443 (or configured HTTP/HTTPS ports) are listening, using 'netstat -an' or checking the IIS/Apache configuration if used as front-endAffected if The WebAccess web service is running and network-accessible (even locally)
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Check for remote access exposureDetermine if the WebAccess portal is accessible from beyond the local network by reviewing firewall rules, router port forwarding configurations, or network segmentation policies that govern access to the WebAccess serverAffected if The WebAccess interface is reachable from untrusted networks or the internet
Your environment is affected if Advantech WebAccess version 8.4.2 or prior is installed and the service is accessible, since the buffer overflow vulnerability can be exploited through user-supplied data processed by the web interface.
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 a patched version of Advantech WebAccess beyond 8.4.2; until then, apply network segmentation and restrict access to the WebAccess service to trusted networks only.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-10607 — 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-2020-10607 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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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
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