What is CVE-2026-9440?

CVE-2026-9440 is a medium-severity vulnerability in Edimax Br-6478ac, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-05-25.

How severe is CVE-2026-9440?

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

RCE in Edimax Br-6478ac

CVE-2026-9440

A vulnerability was identified in Edimax BR-6478AC 1.23. Affected by this vulnerability is the function formAccept of the file /goform/formAccept of the component POST Request Handler. Such manipulation of the argument submit-url leads to…

EPSS: 0.014 (80.8th percentile) — read the EPSS interpretation.

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.

Affected products

Edimax Br-6478ac — versions 1.23

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-9440?: CVE-2026-9440 is a medium-severity vulnerability in Edimax Br-6478ac, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-05-25.
How severe is CVE-2026-9440?: Medium severity. CVSS v3 base score is 6.3 out of 10.