CVE-2026-9443

HIGH

Edimax BR-6478AC POST Request formL2TPSetup buffer overflow

Title source: cna
STIX 2.1

Description

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 L2TPUserName leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

References (4)

Core 4
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-365424 | Edimax BR-6478AC POST Request formL2TPSetup buffer overflow
https://vuldb.com/vuln/365424
Signature, Permissions Required signature permissions-required
VDB-365424 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/365424/cti
Third Party Advisory third-party-advisory
Submit #818452 | Edimax BR6478ACV2 BR6478ACV2_v1.23 Buffer Overflow
https://vuldb.com/submit/818452

Scores

CVSS v3 8.8
EPSS 0.0075
EPSS Percentile 50.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-119 CWE-120
Status published
Products (1)
Edimax/BR-6478AC 1.23
Published May 25, 2026
Tracked Since May 25, 2026