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Command InjectionWeakness · CWE-77

CVE-2026-9347

MEDIUM · 6.3 CVSS v3.1 Published 2026-05-24
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Remotely reachable Zero-click

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 · unedited
A vulnerability has been found in Edimax EW-7438RPn up to 1.31. Affected is the function formWizSurvey of the file /goform/formWizSurvey of the component webs. The manipulation of the argument ip/mask/gateway leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the 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 confidence

OS command injection vulnerability in Edimax EW-7438RPn WiFi range extender (versions up to 1.31) allowing remote attackers to execute arbitrary commands via unsanitized ip/mask/gateway parameters submitted to the /goform/formWizSurvey web form.

MitigationApply vendor firmware patch if available; otherwise isolate device on restricted network segment or replace device, as the vendor did not respond to the disclosure.

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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify device model
    Access the device web interface or check the device label/documentation to confirm the model is Edimax EW-7438RPn
    Affected if Device model is Edimax EW-7438RPn
  2. Check firmware version
    Log into the device web interface and navigate to the system status or firmware upgrade page to view the installed firmware version
    Affected if Firmware version is unknown or unpatched (no vendor patch is available for this CVE)
  3. Verify web interface accessibility
    Confirm the device web interface at http://[device-ip] is accessible on the local network
    Affected if The web interface is reachable from network segments that are not isolated
  4. Confirm vulnerable endpoint exists
    Attempt to access or analyze the /goform/formWizSurvey endpoint or check if the wizard/survey configuration form is present in the web interface
    Affected if The formWizSurvey function is present and accepts ip/mask/gateway parameters

A user is affected if they operate an Edimax EW-7438RPn device with an accessible web interface where the formWizSurvey function handles ip/mask/gateway parameters without sanitization.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor firmware patch if available; otherwise isolate device on restricted network segment or replace device, as the vendor did not respond to the disclosure.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
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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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-9347 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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