Is CVE-2026-13564 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-13564 being exploited in the wild.

How severe is CVE-2026-13564?

High severity, with a CVSS score of 8.8, published 29 June 2026.

Is there a fix for CVE-2026-13564?

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-2026-13564 attacked?

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

Am I affected by CVE-2026-13564?

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-2026-13564: Edimax EW-7478APC stack overflow in formPPPoESetup

CVE-2026-13564 · Severity: high · CVSS 8.8 · Published 2026-06-29

A security vulnerability exists in the Edimax EW-7478APC router, a device used to provide wireless networking and internet connectivity. 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 or unauthorized access to the network traffic passing through the router.

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

Quick answers

Is CVE-2026-13564 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-13564 being exploited in the wild.
How severe is CVE-2026-13564?: High severity, with a CVSS score of 8.8, published 29 June 2026.
Which products and versions are affected?: Edimax EW-7478APC 1.04.
Is there a fix for CVE-2026-13564?: 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-2026-13564 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-13564?: 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

A stack-based buffer overflow vulnerability (CWE-121) exists in the Edimax EW-7478APC router firmware version 1.04. The flaw is located within the 'formPPPoESetup' function of the '/goform/formPPPoESetup' component, which handles POST requests for PPPoE configuration. By sending a malicious POST request with an oversized 'pppUserName' argument, a remote attacker with low privileges can trigger the 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.

Affected products

Edimax EW-7478APC 1.04

Timeline

2026-06-29: advisory: NVD publication date
2026-06-29: disclosed: Public disclosure of the vulnerability and exploit

References

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