Is CVE-2026-9442 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-9442 being exploited in the wild.

How severe is CVE-2026-9442?

High severity, with a CVSS score of 8.8, published 25 May 2026.

Is there a fix for CVE-2026-9442?

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-2026-9442 attacked?

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

Am I affected by CVE-2026-9442?

Check whether you run Edimax BR-6478AC 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-2026-9442: Edimax BR-6478AC buffer overflow in formiNICSiteSurvey

CVE-2026-9442 · Severity: high · CVSS 8.8 · Published 2026-05-25

A security vulnerability exists in the Edimax BR-6478AC wireless router, a device used to provide internet connectivity and networking for homes and small offices. An attacker can exploit this flaw to crash the device or potentially take full control of it by sending a specially crafted web request. This could lead to a complete loss of internet service and unauthorized access to the network's management interface.

Technologies: Edimax BR-6478AC. Vendors: Edimax.

Quick answers

Is CVE-2026-9442 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-9442 being exploited in the wild.
How severe is CVE-2026-9442?: High severity, with a CVSS score of 8.8, published 25 May 2026.
Which products and versions are affected?: Edimax BR-6478AC 1.23.
Is there a fix for CVE-2026-9442?: 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-2026-9442 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9442?: Check whether you run Edimax BR-6478AC 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 Edimax BR-6478AC router version 1.23. The flaw is located within the 'formiNICSiteSurvey' function in the '/goform/formiNICSiteSurvey' component, which handles POST requests. By manipulating the 'selSSID' argument, a remote attacker with low privileges can trigger a buffer overflow. This can lead to arbitrary code execution or a denial of service (DoS) condition. Public exploit code is reportedly available, and the vendor has not yet provided a patch or response.

Affected products

Edimax BR-6478AC 1.23

Timeline

2026-05-25: disclosed: Public disclosure of the vulnerability
2026-05-25: advisory: CVE-2026-9442 published

References

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