# CVE-2026-9345: Edimax EW-7438RPn webs formWizSurvey buffer overflow

> Remote attackers can trigger a buffer overflow in the Edimax EW-7438RPn web interface via crafted arguments, potentially leading to code execution or service disruption.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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-r23w-53vr-mr47

## What is CVE-2026-9345?

CVE-2026-9345 is a high-severity memory corruption 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 was detected in Edimax EW-7438RPn up to 1.31. This affects the function formWizSurvey of the file /goform/formWizSurvey of the component webs. Performing a manipulation of the argument ssid/manualssid/ip/mask/gateway results in buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2026-9345?


## How do I fix CVE-2026-9345?

No fix has been published for CVE-2026-9345 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-9345 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9345 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-9345 and fix it if it is affected.

What it is: CVE-2026-9345 is a high-severity memory corruption 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-2026-9345 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-2026-9345/ (Markdown: https://insights.sbomify.com/CVE-2026-9345/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-9345
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-9345
- OSV: https://osv.dev/vulnerability/CVE-2026-9345

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-9345/
Summaries are generated and may contain mistakes; the official description above is the record.