Quick answers
- Is CVE-2026-12807 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-12807 being exploited in the wild.
- How severe is CVE-2026-12807?
- 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-2026-12807?
- 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-2026-12807 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-12807?
- 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 'setWAN' function of the '/goform/setWAN' endpoint, which handles POST requests. Specifically, the application fails to properly sanitize the 'pppUserName', 'pptpUserName', and 'L2TPUserName' arguments. A remote attacker with low privileges can exploit this by submitting malicious input through these parameters to execute arbitrary system commands on the underlying operating system. While the vendor was notified, no patch has been released, and public exploit code is reportedly available.
Affected products
- Edimax BR-6478AC V2 1.23
Timeline
- 2026-06-21: advisory: NVD publication date
- 2026-06-21: disclosed: Public disclosure of the vulnerability and exploit