Command Injection Vulnerability in Edimax BR-6428nC Web Interface
CVE-2026-7683

5.3MEDIUM

Key Information:

Vendor

Edimax

Status
Br-6428nc
Vendor
CVE Published:
3 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7683?

A security weakness is present in the Edimax BR-6428nC, affecting the web interface component. This vulnerability arises due to improper handling of user input in the /goform/setWAN function, specifically with the parameters pppUserName and pptpUserName. An attacker can exploit this flaw remotely to perform command injection, enabling unauthorized execution of commands on the device. The absence of a response from Edimax regarding this vulnerability raises concerns for users relying on this router for secure network management.

Affected Version(s)

BR-6428nC 1.0

BR-6428nC 1.1

BR-6428nC 1.2

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-2026-7683 - Proof of Concept

References

https://vuldb.com/vuln/360842
vdb-entrytechnical-description
https://vuldb.com/vuln/360842/cti
signaturepermissions-required
https://vuldb.com/submit/801597
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

tian (VulDB User)
VulDB CNA Team
.