CVE-2026-9363
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 · uneditedA vulnerability was detected in Edimax EW-7438RPn 1.12. This issue affects the function formEZCHNwlanSetup of the file /goform/formEZCHNwlanSetu of the component POST Request Handler. Performing a manipulation of the argument method results in command injection. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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 confidenceCommand injection vulnerability in Edimax EW-7438RPn v1.12 wireless range extender's web interface. The formEZCHNwlanSetup POST request handler fails to sanitize the 'method' argument, allowing remote attackers to inject and execute arbitrary shell commands on the device.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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 the device modelAccess the device's web interface or check the device label/metadata for the model number EW-7438RPnAffected if The device is an Edimax EW-7438RPn WiFi range extender
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Check the firmware versionLog into the device's web interface and navigate to System Status or Firmware Upgrade page to locate the firmware version, or use the command: grep -i version /var/flash/romfile or similar file inspection if you have shell accessAffected if The firmware version is 1.12 (the only version explicitly listed as affected in the CVE summary)
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Verify web interface accessibilityAttempt to access the device's web management interface via HTTP/HTTPS on the device's IP address (typically default 192.168.1.1 or assigned by DHCP)Affected if The web interface is reachable on the network - the command injection flaw exists in this web interface
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Confirm the vulnerable function existsIf you have access to the firmware binary or device shell, search for the string 'formEZCHNwlanSetup' in the CGI binary or web handler code; alternatively, capture a POST request to the web interface and examine if the handler processes the 'method' parameterAffected if The formEZCHNwlanSetup function handles POST requests with a 'method' parameter on the device
The device is affected if it is an Edimax EW-7438RPn running firmware v1.12 with its web interface accessible, as the command injection vulnerability resides in the unpatched formEZCHNwlanSetup function's handling of the 'method' argument.
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 dataSince the vendor did not respond to disclosure and no patch exists, implement network segmentation to isolate the device from untrusted networks, disable remote web management if possible, or replace the device with a currently supported model.
- Consultation4.0 h
- Implementation12.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-9363 — 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-2026-9363 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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- Version or environment caveats, and links to real fixes
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