Buffer Overflow Vulnerability in Edimax BR-6428NS Router
CVE-2026-8775

8.7HIGH

Key Information:

Vendor

Edimax

Status
Br-6428ns
Vendor
CVE Published:
18 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8775?

A buffer overflow vulnerability has been discovered in the Edimax BR-6428NS router with firmware version 1.10. The flaw resides in the POST Request Handler, specifically within the function formL2TPSetup. An attacker can exploit this vulnerability by manipulating the L2TPUserName argument, allowing for remote code execution. The potential for exploitation is significant, and despite early notifications to the vendor, no response has been received regarding mitigation.

Affected Version(s)

BR-6428NS 1.10

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-8775 - Proof of Concept

References

https://vuldb.com/vuln/364400
vdb-entrytechnical-description
https://vuldb.com/vuln/364400/cti
signaturepermissions-required
https://vuldb.com/submit/811530
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

wxhwxhwxh_tutu (VulDB User)
VulDB CNA Team
.