Command Injection Vulnerability in Edimax BR-6478AC Router
CVE-2026-9440

5.3MEDIUM

Key Information:

Vendor

Edimax

Status
Br-6478ac
Vendor
CVE Published:
25 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9440?

A command injection vulnerability exists in the Edimax BR-6478AC router version 1.23, specifically in the 'formAccept' function located in the file '/goform/formAccept'. The vulnerability allows attackers to manipulate the 'submit-url' argument, which can result in remote command execution. This presents a serious risk as the exploit is publicly available, and the vendor has not acknowledged the disclosure, leaving users vulnerable to potential attacks.

Affected Version(s)

BR-6478AC 1.23

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-2026-9440 - Proof of Concept

References

https://vuldb.com/vuln/365421
vdb-entrytechnical-description
https://vuldb.com/vuln/365421/cti
signaturepermissions-required
https://vuldb.com/submit/818449
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

wxhwxhwxh_mie (VulDB User)
VulDB CNA Team
.