Vulnerability · Published May 18, 2026 · Assigned by VulDB

CVE-2026-8775Edimax BR-6428NS POST Request formL2TPSetup buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in BR-6428NS from Edimax. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.6%top 52.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A flaw has been found in Edimax BR-6428NS 1.10. This affects the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. This manipulation of the argument L2TPUserName causes buffer overflow. It is possible to initiate 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.

Affected products (as reported)

Vendor	Product	Versions
Edimax	BR-6428NS	1.10

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-364400 | Edimax BR-6428NS POST Request formL2TPSetup buffer overflow vdb-entry, technical-description
VDB-364400 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #811530 | EDIMAX BR-6428NS BR-6428NS_v4_1.10 Buffer Overflow third-party-advisory
https://lavender-bicycle-a5a.notion.site/EDIMAX-BR-6428NS-formL2TPSetup-34b53a41781f8046b38bffcc190c5277?source=copy_link exploit