# CVE-2026-12809: Edimax BR-6478AC V2 command injection in wiz_5in1_redirect

Source: https://junglewise.ai/threats/cve-2026-12809-edimax-br-6478ac-v2-command-injection-in-wiz-5in1-redirect  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-21. Updated: 2026-06-21  
License: CC BY 4.0 with a link back

CVE-2026-12809 · Severity: medium · CVSS 6.3 · Published 2026-06-21

A security vulnerability has been identified in the Edimax BR-6478AC V2 wireless router. This flaw allows an attacker to execute unauthorized commands on the device by sending a specially crafted web request. If exploited, an attacker could gain control over the router, potentially leading to network disruptions or unauthorized access to data passing through the device.

Technologies: [Edimax BR-6478AC V2](https://junglewise.ai/threats/technologies/br-6478ac-v2). Vendors: [Edimax](https://junglewise.ai/threats/vendors/edimax).

## Quick answers

**Is CVE-2026-12809 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-12809 being exploited in the wild.

**How severe is CVE-2026-12809?** Medium severity, with a CVSS score of 6.3, published 21 June 2026.

**Which products and versions are affected?** Edimax BR-6478AC V2 1.23.

**Is there a fix for CVE-2026-12809?** 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-2026-12809 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-12809?** Check whether you run Edimax BR-6478AC V2 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 V2 router running firmware version 1.23. The flaw is located within the 'wiz_5in1_redirect' function of the '/goform/wiz_5in1_redirect' endpoint, which handles POST requests. Specifically, the application fails to properly sanitize the 'newpass' argument before passing it to a system shell. A remote attacker with low privileges can exploit this by sending a crafted POST request to execute arbitrary commands on the underlying operating system. While the vendor was notified, no patch has been released at this time, and public exploit code is reportedly available.

## Affected products

- Edimax BR-6478AC V2 1.23

## Timeline

- 2026-06-21: disclosed: Vulnerability disclosed via VulDB and NVD
- 2026-06-21: advisory

## References

- [https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-wiz_5in1_redirect-34b53a41781f80408b3fca68a24f6028?source=copy_link](https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-wiz_5in1_redirect-34b53a41781f80408b3fca68a24f6028?source=copy_link)
- [https://vuldb.com/cve/CVE-2026-12809](https://vuldb.com/cve/CVE-2026-12809)
- [https://vuldb.com/submit/836673](https://vuldb.com/submit/836673)
- [https://vuldb.com/vuln/372603](https://vuldb.com/vuln/372603)
- [https://vuldb.com/vuln/372603/cti](https://vuldb.com/vuln/372603/cti)

## Related threats

- [Edimax BR-6478AC V2 command injection in POST Request Handler](https://junglewise.ai/threats/cve-2026-12810-edimax-br-6478ac-v2-command-injection-in-post-request-handler)
- [Edimax BR-6478AC V2 command injection in stainfo POST handler](https://junglewise.ai/threats/cve-2026-12808-edimax-br-6478ac-v2-command-injection-in-stainfo-post-handler)
- [Edimax BR-6478AC V2 command injection in setWAN](https://junglewise.ai/threats/cve-2026-12807-edimax-br-6478ac-v2-command-injection-in-setwan)
- [Edimax BR-6478AC V2 buffer overflow in formWlSiteSurvey](https://junglewise.ai/threats/cve-2026-12806-edimax-br-6478ac-v2-buffer-overflow-in-formwlsitesurvey)