RCE in Edimax Br-6478ac V2
CVE-2026-12809
A vulnerability was identified in Edimax BR-6478AC V2 1.23. Affected is the function wiz_5in1_redirect of the file /goform/wiz_5in1_redirect of the component POST Request Handler. Such manipulation of the argument newpass leads to command injection. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.020 (79.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Edimax Br-6478ac V2 — versions 1.23
Weakness classification (CWE)
References
- vuldb.com/vuln/372603 (technical-description, vdb-entry)
- vuldb.com/vuln/372603/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-12809 (third-party-advisory)
- vuldb.com/submit/836673 (third-party-advisory)
- lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-wiz_5in1_redirect-34b53a4178… (exploit)
Frequently asked questions
- What is CVE-2026-12809?
- CVE-2026-12809 is a medium-severity vulnerability in Edimax Br-6478ac V2, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-06-21.
- How severe is CVE-2026-12809?
- Medium severity. CVSS v3 base score is 6.3 out of 10.