CVE-2026-10125: Edimax BR-6478AC stack overflow in formPPPoESetup

CVE-2026-10125 · Severity: high · CVSS 8.8 · Published 2026-05-30

A security vulnerability has been identified 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 gain unauthorized control over the device by sending a specially crafted web request. This could lead to a complete disruption of internet services, interception of network traffic, or further attacks on other devices connected to the local network.

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

Quick answers

Is CVE-2026-10125 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-10125 being exploited in the wild.
How severe is CVE-2026-10125?
High severity, with a CVSS score of 8.8, published 30 May 2026.
Which products and versions are affected?
Edimax BR-6478AC 1.23.
Is there a fix for CVE-2026-10125?
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-2026-10125 attacked?
It is attacked over the network, in device firmware.
Am I affected by CVE-2026-10125?
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 firmware version 1.23. The flaw is located within the 'formPPPoESetup' function in the '/goform/formPPPoESetup' component, which handles POST requests for PPPoE configuration. By manipulating the 'pppUserName' argument, a remote attacker with low privileges can overflow the stack buffer. This can lead to remote code execution (RCE) or a denial of service (DoS) condition. While the attack requires network reachability and basic authentication, a public exploit is reportedly available.

Affected products

  • Edimax BR-6478AC 1.23

Timeline

  • 2026-05-30: disclosed: Initial public disclosure of the vulnerability.
  • 2026-05-30: advisory: NVD published the CVE record.

References

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