CVE-2018-8837
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 · uneditedProcessing specially crafted .pm3 files in Advantech WebAccess HMI Designer 2.1.7.32 and prior may cause the system to write outside the intended buffer area and 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 · moderate confidenceA buffer overflow vulnerability exists in Advantech WebAccess HMI Designer versions 2.1.7.32 and prior when parsing specially crafted .pm3 project files. The application fails to properly validate buffer boundaries during file processing, allowing data to be written outside allocated memory regions. This memory corruption can be exploited to achieve remote code execution.
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<= 2.1.7.32CVSS 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:3.0/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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Determine if Advantech WebAccess HMI Designer is installedCheck the system for presence of the Advantech WebAccess HMI Designer application in Program Files or the Windows installed programs listAffected if The application is found on the system
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Identify the installed version of WebAccess HMI DesignerLocate the application executable or check the Windows registry for the installed version information, typically found in the program files directory or Add/Remove Programs entryAffected if The version number cannot be determined or is <= 2.1.7.32
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Verify the .pm3 file parsing functionality is presentCheck if the application installation includes the components needed to open .pm3 project files, typically indicated by file association or import capabilityAffected if The application can parse or import .pm3 files
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Confirm the application processes .pm3 files without additional security controlsTest or inspect whether opening a .pm3 file directly triggers the vulnerable parsing code path in the applicationAffected if The application directly parses .pm3 files upon user interaction without sandboxing or additional validation
The system is affected if Advantech WebAccess HMI Designer version 2.1.7.32 or earlier is installed and the application can process .pm3 project 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 dataUsers should avoid opening .pm3 files from untrusted sources and apply vendor-supplied patches when available. Organizations should also implement network segmentation and endpoint controls to limit exposure to this vulnerability.
- Consultation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-8837 — 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-2018-8837 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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