CVE-2018-7837
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 Improper Restriction of XML External Entity Reference ('XXE') vulnerability exists on numerous methods of the IIoT Monitor 3.1.38 software that could allow the software to resolve documents outside of the intended sphere of control, causing the software to embed incorrect documents into its output and expose restricted information.
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 confidenceThis is an XXE (XML External Entity) injection vulnerability in IIoT Monitor version 3.1.38. Multiple methods within the software accept XML input without properly restricting external entity references, allowing an attacker to inject malicious XML that can access local files or internal systems, potentially exposing sensitive data or causing the application to embed incorrect documents.
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= 3.1.38CVSS 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:3.0/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 IIoT Monitor installation versionLocate the installed IIoT Monitor application and retrieve its version number through the application UI, about page, or installation directory metadataAffected if The installed version is exactly 3.1.38
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Determine if XML input is acceptedReview application functionality to identify endpoints, features, or modules that accept XML-formatted input or documentsAffected if The application processes or parses XML input from users or external sources
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Inspect XML parser configurationExamine the application configuration files or parser settings for XML processing components to verify whether external entity resolution and DTD processing are explicitly disabledAffected if External entity resolution and DTD processing are not disabled in the XML parser configuration
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Check for XXE protection mechanismsReview application-level input validation or security configurations that filter or sanitize XML submissions for entity referencesAffected if No XXE input validation or entity reference filtering is implemented
You are affected if running IIoT Monitor version 3.1.38 and the application accepts XML input without disabled external entities and DTD processing in its XML parsers.
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 dataDisable external entity resolution in all XML parsers used by the application, enable XXE protections on the parser configurations, and implement input validation for XML submissions. Consider using a parser that has XXE disabled by default or explicitly disabling external entities and DTD processing.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-7837 — 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-2018-7837 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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