What is CVE-2026-9443?

CVE-2026-9443 is a high-severity vulnerability in Edimax Br-6478ac, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-05-25.

How severe is CVE-2026-9443?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Edimax Br-6478ac

CVE-2026-9443

A security vulnerability has been detected in Edimax BR-6478AC 1.23. This vulnerability affects the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. The manipulation of the argument L2TPUserNa…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (14.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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-2026-9443?: CVE-2026-9443 is a high-severity vulnerability in Edimax Br-6478ac, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-05-25.
How severe is CVE-2026-9443?: High severity. CVSS v3 base score is 8.8 out of 10.