Command Injection Vulnerability in Edimax BR-6478AC V2 Router
CVE-2026-12807

5.3MEDIUM

Key Information:

Vendor

Edimax

Status
Br-6478ac V2
Vendor
CVE Published:
21 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-12807?

A critical command injection vulnerability exists in the Edimax BR-6478AC V2 router, specifically affecting the setWAN function within the POST Request Handler. This flaw allows attackers to manipulate parameters such as pppUserName, pptpUserName, and L2TPUserName to execute arbitrary commands remotely. The public disclosure of this exploit poses a significant risk as it can be leveraged without user interaction. Despite being notified early by security researchers, the vendor did not respond to efforts for resolution.

Affected Version(s)

BR-6478AC V2 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-2026-12807 - Proof of Concept

References

https://vuldb.com/vuln/372601
vdb-entrytechnical-description
https://vuldb.com/vuln/372601/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-12807
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

yhryhryhr_tu (VulDB User)
VulDB CNA Team
.