Is CVE-2026-19961 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-19961 being exploited in the wild.

How severe is CVE-2026-19961?

Critical severity, with a CVSS score of 9.9, published 16 August 2026.

Is there a fix for CVE-2026-19961?

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-2026-19961 attacked?

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

Am I affected by CVE-2026-19961?

Check whether you run Edimax EW-7478APC 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-2026-19961: Edimax EW-7478APC buffer overflow in wireless site survey

CVE-2026-19961 · Severity: critical · CVSS 9.9 · Published 2026-08-16

The Edimax EW-7478APC is a wireless access point used to extend network coverage in offices and homes. A buffer overflow vulnerability in its web management interface allows attackers to remotely crash the device or potentially execute malicious code, disabling network connectivity for all connected users. The exploit is publicly available and the vendor has not provided patches or acknowledgment.

Technologies: Edimax EW-7478APC. Vendors: Edimax.

Quick answers

Is CVE-2026-19961 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-19961 being exploited in the wild.
How severe is CVE-2026-19961?: Critical severity, with a CVSS score of 9.9, published 16 August 2026.
Which products and versions are affected?: Edimax EW-7478APC 1.04.
Is there a fix for CVE-2026-19961?: 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-2026-19961 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-19961?: Check whether you run Edimax EW-7478APC 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

The vulnerability is a stack buffer overflow in the formWlSiteSurvey function within the /goform/formWlSiteSurvey endpoint of the Edimax EW-7478APC firmware version 1.04. The flaw is triggered by manipulating the selSSID parameter, which is not properly validated before being written to a fixed-size buffer. The attack is remotely exploitable without authentication, allowing an unauthenticated attacker to send a crafted request that overflows the buffer and potentially achieve remote code execution or denial of service. Public exploit code is available, and Edimax has not responded to responsible disclosure attempts or released a firmware patch.

Affected products

Edimax EW-7478APC 1.04

Timeline

2026-08-16: disclosed: Vulnerability disclosed publicly; exploit code available
2026-08-16: other: Vendor contacted but did not respond

References

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