What is CVE-2026-9400?

CVE-2026-9400 is a medium-severity vulnerability in Edimax Br-6675nd, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-05-24.

How severe is CVE-2026-9400?

Medium severity. CVSS v3 base score is 6.3 out of 10.

RCE in Edimax Br-6675nd

CVE-2026-9400

A flaw has been found in Edimax BR-6675nD 1.12. This issue affects the function formUSBStorage of the file /goform/formUSBStorage of the component POST Request Handler. Executing a manipulation of the argument sub_dir can lead to command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Published 2026-05-24 · last modified 2026-07-23.

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: 0.024 (83.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.024 · change: +0.012

Affected products

Edimax Br-6675nd — versions 1.12

Weakness classification (CWE)

References

vuldb.com/vuln/365381 (technical-description, vdb-entry)
vuldb.com/vuln/365381/cti (signature, permissions-required)
vuldb.com/submit/811562 (third-party-advisory)
lavender-bicycle-a5a.notion.site/EDIMAX-BR-6675nD-formUSBStorage-34b53a41781f80… (exploit)

Frequently asked questions

What is CVE-2026-9400?: CVE-2026-9400 is a medium-severity vulnerability in Edimax Br-6675nd, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-05-24.
How severe is CVE-2026-9400?: Medium severity. CVSS v3 base score is 6.3 out of 10.