CVE-2024-51017
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 R7000P v1.3.3.154 was discovered to contain a stack overflow via the l2tp_user_netmask parameter at l2tp.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 · moderate confidenceA stack buffer overflow vulnerability exists in the l2tp.cgi web interface component of Netgear R7000P firmware version 1.3.3.154. The vulnerability is triggered when a crafted POST request contains an excessively long string in the l2tp_user_netmask parameter, causing the stack to overflow and resulting in denial of service.
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= 1.3.3.154CVSS 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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Confirm Netgear R7000P modelCheck the device label or log into the router web interface and look for the model number in the status or administration pageAffected if Device is not a Netgear R7000P router
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Check installed firmware versionLog into the router web interface, go to Administration > Firmware Update or Advanced > Administration > Router Update to view the current firmware versionAffected if Firmware version is 1.3.3.154 exactly
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Verify l2tp.cgi is accessibleAttempt to access http://[router-ip]/l2tp.cgi or check if the file exists in the web directory (typically /www or /htdocs on the device)Affected if l2tp.cgi is present and accessible on the device
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Check if L2TP VPN feature is enabledLog into the router web interface, navigate to Advanced > VPN > L2TP or similar VPN settings page to see if L2TP VPN is configured or enabledAffected if L2TP VPN feature is enabled or configured on the router
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Check remote web management statusLog into the router web interface, go to Advanced > Administration > Remote Management to see if remote web management is enabledAffected if Remote web management is enabled, allowing external attackers to reach l2tp.cgi
You are affected if you are running Netgear R7000P firmware version 1.3.3.154 with the L2TP feature enabled and remote web management accessible to untrusted networks.
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 dataApply any available firmware update from Netgear for the R7000P. Until a patch is released, disable remote web management, restrict administrative access to trusted IPs only, and consider network segmentation of the affected device.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2024-51017 — 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-2024-51017 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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