CVE-2024-51001
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 · uneditedNetgear R8500 v1.0.2.160 was discovered to contain a stack overflow via the sysDNSHost parameter at ddns.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.
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 stack-based buffer overflow vulnerability exists in the ddns.cgi CGI script on Netgear R8500 v1.0.2.160 firmware. The sysDNSHost parameter in POST requests is not properly bounds-checked before being copied to a stack buffer, allowing an attacker to overflow the buffer and crash the service or device.
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= 1.0.2.160CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:L/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 device modelAccess the router web interface or check the device label to confirm the model is Netgear R8500Affected if Device model is not Netgear R8500 - not affected by this specific CVE
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Check firmware versionIn the router web interface, go to Administration > Firmware Update or check under Advanced > Administration > Router Status to find the firmware versionAffected if Firmware version is 1.0.2.160 - vulnerable to this CVE; versions different from 1.0.2.160 are not affected by this specific flaw
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Verify DDNS service statusIn the router web interface, look for DDNS settings under Advanced > DDNS or similar menu. Check if DDNS (Dynamic DNS) service is enabled or configuredAffected if DDNS service is enabled - the ddns.cgi script is active and the vulnerable code path can be triggered; if DDNS is disabled, the attack surface is reduced
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Confirm ddns.cgi accessibilityAttempt to access http://[router-ip]/ddns.cgi via HTTP POST request to the sysDNSHost parameter. Use a web proxy or curl to send a POST request with an overly long string in the sysDNSHost fieldAffected if The CGI script responds and accepts the sysDNSHost parameter - the vulnerable code path is reachable; if the script returns an error or is not found, the vulnerability may not be exploitable in your configuration
You are affected if you have a Netgear R8500 router running firmware version 1.0.2.160 with the DDNS service enabled and the ddns.cgi script accessible.
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 dataCheck Netgear for available firmware updates; if unavailable, consider network segmentation, disabling DDNS service, or replacing the end-of-life device.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2024-51001 — 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-2024-51001 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
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