Is CVE-2026-9345 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-9345 being exploited in the wild.

How severe is CVE-2026-9345?

High severity, with a CVSS score of 8.8, published 24 May 2026.

Is there a fix for CVE-2026-9345?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-9345 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-9345?

Check whether you run Edimax EW-7438RPn at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

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

CVE-2026-9345 · Severity: high · CVSS 8.8 · Published 2026-05-24

A security vulnerability exists in the Edimax EW-7438RPn Wi-Fi extender, a device used to expand wireless network coverage. An attacker can exploit this flaw to crash the device or potentially take full control of it by sending specially crafted network requests. This could lead to a complete loss of internet connectivity through the extender and unauthorized access to the device's settings.

Technologies: Edimax EW-7438RPn. Vendors: Edimax.

Quick answers

Is CVE-2026-9345 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-9345 being exploited in the wild.
How severe is CVE-2026-9345?: High severity, with a CVSS score of 8.8, published 24 May 2026.
Which products and versions are affected?: Edimax EW-7438RPn up to 1.31.
Is there a fix for CVE-2026-9345?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-9345 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9345?: Check whether you run Edimax EW-7438RPn at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow vulnerability exists in the 'webs' binary of the Edimax EW-7438RPn extender (firmware up to 1.31). The vulnerability is located in the 'formWizSurvey' function within the '/goform/formWizSurvey' endpoint. The application fails to validate the length of several parameters, including 'ssid', 'manualssid', 'ip', 'mask', and 'gateway', before copying them into fixed-size stack buffers. A remote attacker with low privileges (authenticated) can provide overly long strings for these arguments to overwrite the function's return address. This can result in a denial of service (system crash) or arbitrary code execution. A public exploit (PoC) is available, and the vendor has reportedly not responded to disclosure attempts.

Affected products

Edimax EW-7438RPn up to 1.31

Timeline

2026-05-23: disclosed: Initial disclosure via VulDB and GitHub PoC
2026-05-24: advisory: NVD publication date

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.