CVE-2023-51733
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 Identity parameter under Local endpoint settings 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 confidenceStored XSS vulnerability in Skyworth Router CM5100 v4.1.1.24 web interface. The Identity parameter under Local endpoint settings does not validate/sanitize user input, allowing injection of malicious script that executes when other users view the 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 firmware versionAccess the router web interface and navigate to Status or System settings to view the firmware version, or use the router's administrative console to check the installed firmware versionAffected if Firmware version is 4.1.1.24 (exact match)
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Verify web interface accessibilityConfirm the router's web administration interface is accessible on the default HTTP/HTTPS ports (typically 80 or 443) by attempting to reach the device's IP addressAffected if Web interface is exposed and accessible on the network
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Locate Local endpoint settingsLog into the web interface and navigate to the Local endpoint settings section, typically found under Network, WAN, or Endpoint configuration menusAffected if The Local endpoint settings page is accessible and displays an Identity parameter field
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Check Identity parameter behaviorView the Identity parameter field in the Local endpoint settings and inspect the page source or use browser developer tools to see if user-supplied input is rendered without encodingAffected if The Identity parameter accepts user input and displays it back without visible sanitization or encoding
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Inspect stored XSS payloadIf a value was previously entered in the Identity field, view the page where it is displayed to confirm the injected content is stored and renderedAffected if Previously entered values in the Identity field are rendered directly in the HTML without encoding
A user is affected if they are running firmware version 4.1.1.24 and have accessed the Local endpoint settings page in the web interface where the Identity parameter exists.
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 input validation and output encoding on the Identity parameter; update to vendor patch if available; restrict web interface access to trusted users.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-51733 — 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-2023-51733 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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