CVE-2024-36251
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 · uneditedThe web interface of the affected devices process some crafted HTTP requests improperly, leading to a device crash. More precisely, a crafted parameter to billcodedef_sub_sel.html is not processed properly and device-crash happens. As for the details of affected product names, model numbers, and versions, refer to the information provided by the respective vendors listed under [References].
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 vulnerability in the web interface of affected devices allows a crafted HTTP request with a malformed parameter to billcodedef_sub_sel.html to trigger improper processing, resulting in a denial of service via device crash.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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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Identify the device product and versionAccess the device's web interface or CLI and locate the firmware/software version information. This is typically found in System Info, Status, or About pages on the web UI, or via 'show version' or similar commands on the CLI.Affected if The device runs a web interface and the installed version falls within the vendor-published affected version range for CVE-2024-36251
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Confirm web interface is accessibleAttempt to access the device's web management interface over HTTP/HTTPS from a network perspective. Verify the web service is running and responding to requests.Affected if The web interface is exposed and reachable on the network (this is a prerequisite for exploitation)
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Verify billcodedef_sub_sel.html is presentAttempt to access the specific URI '/billcodedef_sub_sel.html' on the device's web server. This may be via a direct HTTP GET request to the full URL.Affected if The file billcodedef_sub_sel.html exists and is accessible on the web server - this is the specific endpoint required for the exploit
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Check for recent crashes or DoS eventsReview device logs, system logs, or crash logs for entries around the time of potential exploitation. Look for patterns indicating web service crashes or restarts.Affected if The device has experienced unexplained web service crashes or denial of service events that correlate with attempts to access the affected URL
A device is affected if it runs a web interface version within the vendor-specified affected range AND exposes the billcodedef_sub_sel.html endpoint to network attackers, making the malformed HTTP request possible.
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 dataRestrict access to the web management interface to trusted networks only, and apply vendor-supplied patches when available.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-36251 — 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-2024-36251 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data