CVE-2024-21846
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 unauthenticated attacker can reset the board and stop transmitter operations by sending a specially-crafted GET request to the command.cgi gateway, resulting in a denial-of-service scenario.
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 unauthenticated denial-of-service vulnerability in the command.cgi gateway. An attacker can reset the board and stop transmitter operations by sending a specially-crafted GET request without any authentication, causing service disruption.
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
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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 if command.cgi endpoint is network-accessibleScan your perimeter or internal network for exposed web interfaces that serve command.cgi. Use a tool like nmap or curl to probe: curl -I http://TARGET_IP/cgi-bin/command.cgiAffected if The endpoint responds to HTTP/HTTPS requests from untrusted networks without requiring authentication
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Verify authentication is required for command.cgiAttempt an unauthenticated GET request to command.cgi and observe the response: curl -v http://TARGET_IP/cgi-bin/command.cgiAffected if The request succeeds without any login session, authorization headers, or credentials
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Check for board reset functionality in web interfaceReview the command.cgi parameters and behaviors. If accessible, send a minimal GET request with reset-related parameters and observe if the board resets or transmitter stopsAffected if The CGI accepts and processes reset commands without verifying user identity first
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Inspect access control logs for unauthorized reset attemptsReview web server logs, CGI logs, or security appliance logs for requests to command.cgi that include reset or board-control parameters, especially from unauthorized IP addressesAffected if Logs show unauthenticated or unauthorized requests to command.cgi that triggered board resets or transmitter stop actions
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Confirm network segmentation around management interfacesVerify that the network segment containing the web management interface (including command.cgi) is isolated from untrusted networks via firewall rules or VLANsAffected if The management interface is reachable from networks that should not have administrative access, such as the public internet or guest networks
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Determine the installed firmware or software versionCheck the device firmware version, web server software version, or application version through the admin interface, CLI, or HTTP headers: curl -s http://TARGET_IP/ | grep -i versionAffected if The version cannot be determined or is unknown, making it difficult to confirm if a patch has been applied
The environment is affected if command.cgi is accessible without authentication and accepts reset or transmitter-control commands from unauthenticated users, allowing an attacker to disrupt operations.
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 command.cgi endpoint via network segmentation or firewall rules, and implement proper authentication and authorization controls before allowing board reset operations.
- Consultation3.0 h
- Implementation6.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-21846 — 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-2024-21846 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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- 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