CVE-2024-51014
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 XR300 v1.0.3.78 was discovered to contain a stack overflow via the ssid_an parameter in bridge_wireless_main.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 Netgear XR300 router firmware v1.0.3.78. The vulnerability is located in the bridge_wireless_main.cgi script, specifically in the ssid_an parameter handling. Attackers can trigger the overflow via a crafted POST request, causing a 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= 1.0.3.78CVSS 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 firmware versionAccess the router administration panel or check the system info page, or use 'grep' or 'cat' on /etc/version or /proc/version if you have shell accessAffected if The firmware version is exactly 1.0.3.78
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Locate the vulnerable CGI scriptCheck if the file bridge_wireless_main.cgi exists in the web server's cgi-bin directory (typically /www/cgi-bin/ or /usr/www/cgi-bin/)Affected if The script exists on the device and the firmware version is 1.0.3.78
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Verify wireless bridging feature is enabledAccess the router's web UI and check if Wireless Bridge mode or Access Point mode is configured, or inspect the configuration file for bridge-related settingsAffected if Wireless bridging/AP mode is enabled and the firmware is v1.0.3.78
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Inspect for denial of service symptomsCheck router system logs for crashes, reboots, or CGI script errors, and verify if the device becomes unresponsive after POST requests to bridge_wireless_main.cgiAffected if The device exhibits crashes or hangs and the ssid_an parameter processing fails
You are affected if the router runs firmware version 1.0.3.78 and the bridge_wireless_main.cgi script with the ssid_an parameter is 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 dataApply any available firmware update from Netgear. If no update exists, implement input validation and bounds checking on the ssid_an parameter in bridge_wireless_main.cgi to prevent buffer overflows, and consider network-level filtering to limit CGI endpoint access.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
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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-2024-51014 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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