# CVE-2026-10166: Edimax BR-6478AC command injection in formWlbasic

Source: https://junglewise.ai/threats/cve-2026-10166-edimax-br-6478ac-command-injection-in-formwlbasic  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-31. Updated: 2026-05-31  
License: CC BY 4.0 with a link back

CVE-2026-10166 · Severity: medium · CVSS 6.3 · Published 2026-05-31

A 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 take control of the router by injecting malicious commands through its web management interface. This could lead to unauthorized access to network traffic, disruption of internet services, or further attacks on devices connected to the local network.

Technologies: [Edimax BR-6478AC](https://junglewise.ai/threats/technologies/br-6478ac). Vendors: [Edimax](https://junglewise.ai/threats/vendors/edimax).

## Quick answers

**Is CVE-2026-10166 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-10166 being exploited in the wild.

**How severe is CVE-2026-10166?** Medium severity, with a CVSS score of 6.3, published 31 May 2026.

**Which products and versions are affected?** Edimax BR-6478AC 1.23.

**Is there a fix for CVE-2026-10166?** 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-2026-10166 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-10166?** 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 command injection vulnerability exists in the Edimax BR-6478AC router version 1.23 within the POST request handler for /goform/formWlbasic. The root cause is improper neutralization of special elements in the 'rootAPmac' argument processed by the formWlbasic function. A remote attacker with low privileges (authenticated) can exploit this by sending a specially crafted POST request to execute arbitrary commands on the underlying operating system. The exploit for this vulnerability has been publicly disclosed. At the time of reporting, no official patch has been confirmed.

## Affected products

- Edimax BR-6478AC 1.23

## Timeline

- 2026-05-31: disclosed: Public disclosure of the vulnerability and exploit details.
- 2026-05-31: advisory: CVE-2026-10166 published.

## References

- [https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formWlbasic-34b53a41781f80edb1e5e0104741dfb2?source=copy_link](https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formWlbasic-34b53a41781f80edb1e5e0104741dfb2?source=copy_link)
- [https://vuldb.com/submit/818623](https://vuldb.com/submit/818623)
- [https://vuldb.com/vuln/367418](https://vuldb.com/vuln/367418)
- [https://vuldb.com/vuln/367418/cti](https://vuldb.com/vuln/367418/cti)

## Related threats

- [Edimax BR-6478AC stack overflow in formWanTcpipSetup](https://junglewise.ai/threats/cve-2026-10165-edimax-br-6478ac-stack-overflow-in-formwantcpipsetup)
- [Edimax BR-6478AC buffer overflow in formUSBFolder](https://junglewise.ai/threats/cve-2026-10164-edimax-br-6478ac-buffer-overflow-in-formusbfolder)
- [Edimax BR-6478AC buffer overflow in formUSBAccount](https://junglewise.ai/threats/cve-2026-10163-edimax-br-6478ac-buffer-overflow-in-formusbaccount)
- [Edimax BR-6478AC command injection in formStaDrvSetup](https://junglewise.ai/threats/cve-2026-10127-edimax-br-6478ac-command-injection-in-formstadrvsetup)
- [Edimax BR-6478AC buffer overflow in formQoS](https://junglewise.ai/threats/cve-2026-10126-edimax-br-6478ac-buffer-overflow-in-formqos)