CVE-2019-3769
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 · uneditedDell Wyse Management Suite versions prior to 1.4.1 contain a stored cross-site scripting vulnerability. A remote authenticated malicious user with low privileges could exploit this vulnerability to store malicious payload in the device heartbeat request. When victim users access the submitted data through their browsers, the malicious code gets executed by the web browser in the context of the vulnerable application.
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 confidenceDell Wyse Management Suite versions prior to 1.4.1 contain a stored cross-site scripting vulnerability in the device heartbeat request function. An authenticated user with low privileges can inject malicious JavaScript payload into the heartbeat request, which is stored by the application and executed when other users view the data in their browsers.
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< 1.4.1CVSS 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
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/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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Check installed Dell Wyse Management Suite versionAccess the application admin interface and navigate to the About or System Information section to view the current version number. Alternatively, check the installer or system packages if you have server access.Affected if The version displayed is lower than 1.4.1 (for example, 1.4.0, 1.3.x, or earlier)
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Verify heartbeat request function is accessibleConfirm that the device heartbeat endpoint is enabled and accessible in your deployment. This is typically found in the device management or monitoring configuration settings.Affected if The heartbeat function is enabled and processing requests from managed devices
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Inspect application logs for suspicious heartbeat payloadsReview server or application logs for heartbeat request entries. Look for unusual patterns, encoded characters, or JavaScript tags (<script>, etc.) within heartbeat data fields.Affected if Logs contain heartbeat requests with JavaScript tags, event handlers (onload, onerror, etc.), or other XSS payloads
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Check stored heartbeat data for injected scriptsExamine the database or data storage where heartbeat information is persisted. Query the heartbeat records to identify any stored malicious payloads in device name, metadata, or other user-controlled fields.Affected if Stored heartbeat records contain unsanitized script tags or JavaScript code that could execute in a user's browser
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Review user access controls for heartbeat injectionDetermine if low-privilege authenticated users have the ability to submit or modify heartbeat requests. Check role-based access control (RBAC) settings for the heartbeat functionality.Affected if Low-privilege users can submit heartbeat data without proper input validation
You are affected if your Dell Wyse Management Suite version is below 1.4.1 AND the heartbeat request function is enabled, allowing stored XSS payloads to be injected and executed.
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 data1.4.1
Upgrade to Dell Wyse Management Suite version 1.4.1 or later. Additionally, implement input validation and output encoding on all user-supplied data in heartbeat requests to prevent XSS.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-3769 — 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-2019-3769 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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