CVE-2023-51737
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 · uneditedThis vulnerability exist in Skyworth Router CM5100, version 4.1.1.24, due to insufficient validation of user supplied input for the Preshared Phrase parameter at its web interface. A remote attacker could exploit this vulnerability by supplying specially crafted input to the parameter at the web interface of the vulnerable targeted system. Successful exploitation of this vulnerability could allow the attacker to perform stored XSS attacks on the targeted system.
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 stored XSS vulnerability exists in Skyworth Router CM5100 version 4.1.1.24 due to insufficient validation of the Preshared Phrase parameter on the web interface. An attacker can inject malicious JavaScript code through this parameter, which gets stored and executed when other users view the affected page.
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= 4.1.1.24CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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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Identify the installed firmware versionAccess the router web interface and navigate to the System Status or Device Information page to view the firmware version. Alternatively, check the login page footer or About section for the version number.Affected if The installed firmware version is exactly 4.1.1.24
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Verify the web management interface is activeAttempt to reach the router web interface by entering the router IP address in a browser. Confirm the login or status page loads successfully.Affected if The web interface is accessible and responds on HTTP or HTTPS ports
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Locate the Preshared Phrase parameterNavigate to the wireless security settings section of the web interface, typically found under Wireless, Wi-Fi, or Security settings. Look for the Preshared Phrase or Pre-Shared Key input field.Affected if The Preshared Phrase input field exists in the wireless configuration page
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Inspect the parameter for existing script contentView the page source or examine the HTML of the Preshared Phrase field. Check if any JavaScript tags, event handlers, or encoded script payloads are present in the stored value.Affected if Malicious script code is stored and rendered within the Preshared Phrase parameter on the page
The environment is affected if the device runs firmware version 4.1.1.24 and the web interface with the Preshared Phrase parameter is accessible and contains injected script content.
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 dataImplement strict input validation and context-aware output encoding for the Preshared Phrase parameter to neutralize any script injection attempts. Apply the vendor patch when available.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-51737 — 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-2023-51737 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
- No weaponised exploit code, or anything meant to cause harm
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