CVE-2026-13582: Edimax EW-7478APC buffer overflow in formUSBAccount

CVE-2026-13582 · Severity: high · CVSS 8.8 · Published 2026-06-29

A security vulnerability has been identified in the Edimax EW-7478APC router, a device used to provide wireless internet connectivity. An attacker can exploit a flaw in how the device handles USB account settings to potentially take control of the router or cause it to crash. This could lead to unauthorized access to the network, interception of data, or a complete loss of internet service for connected users.

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

Quick answers

Is CVE-2026-13582 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-13582 being exploited in the wild.
How severe is CVE-2026-13582?
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-2026-13582?
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-2026-13582 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-13582?
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 classic buffer overflow (CWE-120) exists in the Edimax EW-7478APC firmware version 1.04. The vulnerability is located within the 'formUSBAccount' function of the '/goform/formUSBAccount' file, which serves as a POST request handler. By manipulating the 'UserName' or 'Password' arguments in a POST request, an attacker can overflow a memory buffer. This attack can be carried out remotely, though it typically requires low-level authentication (PR:L). Successful exploitation could lead to full system compromise or a denial of service. As of the advisory date, the vendor has not responded to disclosure attempts, and no patch is currently available.

Affected products

  • Edimax EW-7478APC 1.04

Timeline

  • 2026-06-29: advisory: Initial disclosure by VulDB/NVD
  • 2026-06-29: disclosed: Public exploit published

References

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