Buffer Overflow Vulnerability in Edimax BR-6675nD Router
CVE-2026-9381

8.7HIGH

Key Information:

Vendor

Edimax

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9381?

A vulnerability in the Edimax BR-6675nD router affects the function formPPPoESetup within the POST Request Handler. This vulnerability arises from improper handling of the pppUserName parameter, resulting in a buffer overflow. An attacker can exploit this flaw remotely, potentially executing arbitrary code or compromising the system. Despite early disclosure of this issue to the vendor, no response has been issued. The exploit has been made publicly available, highlighting the urgent need for users to secure their devices.

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-2026-9381 - Proof of Concept

References

https://vuldb.com/vuln/365344
vdb-entrytechnical-description
https://vuldb.com/vuln/365344/cti
signaturepermissions-required
https://vuldb.com/submit/811559
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
.