Buffer Overflow Vulnerability in Edimax BR-6675nD Router
CVE-2026-9380

8.7HIGH

Key Information:

Vendor

Edimax

Status
Br-6675nd
Vendor
CVE Published:
24 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9380?

A vulnerability has been identified in the Edimax BR-6675nD router, specifically within the formL2TPSetup function of the POST Request Handler. This issue arises from improper handling of the L2TPUserName argument during remote requests, resulting in a potential buffer overflow. This flaw could be exploited by an attacker to compromise the device's operation remotely. Despite proactive notification, the vendor has not taken steps to address the issue. Immediate mitigation strategies are recommended to protect network integrity.

Affected Version(s)

BR-6675nD 1.12

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-2026-9380 - Proof of Concept

References

https://vuldb.com/vuln/365343
vdb-entrytechnical-description
https://vuldb.com/vuln/365343/cti
signaturepermissions-required
https://vuldb.com/submit/811558
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

yhryhryhr_tu (VulDB User)
VulDB CNA Team
.