# CVE-2026-9347: Edimax EW-7438RPn webs formWizSurvey os command injection

> Remote attackers can execute arbitrary OS commands on Edimax EW-7438RPn devices via the formWizSurvey interface due to improper input validation.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 May 2026
- **Updated:** 26 May 2026
- **Also known as:** GHSA-f3jx-hr96-xf98

## What is CVE-2026-9347?

CVE-2026-9347 is a medium-severity command injection vulnerability in Edimax EW-7438RPn, published on 24 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

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.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-9347?


## How do I fix CVE-2026-9347?

No fix has been published for CVE-2026-9347 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-9347 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9347 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-9347 and fix it if it is affected.

What it is: CVE-2026-9347 is a medium-severity command injection vulnerability in Edimax EW-7438RPn, published on 24 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9347 exists.

Affected product: Edimax EW-7438RPn. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-9347/ (Markdown: https://insights.sbomify.com/CVE-2026-9347/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-9347
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-9347
- OSV: https://osv.dev/vulnerability/CVE-2026-9347

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-9347/
Summaries are generated and may contain mistakes; the official description above is the record.