Buffer Overflow Vulnerability in Edimax BR-6478AC Routers
CVE-2026-10126

8.7HIGH

Key Information:

Vendor

Edimax

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10126?

A security flaw has been identified in Edimax BR-6478AC routers, specifically affecting version 1.23. The issue is rooted in the formQoS function located in the /goform/formQoS file, where improper handling of the selSSID argument can lead to a buffer overflow. This vulnerability allows remote attackers to exploit the flaw and potentially execute malicious commands, posing significant security risks. The exploit has already been made public, emphasizing the urgency for users to apply necessary mitigations.

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-2026-10126 - Proof of Concept

References

https://vuldb.com/vuln/367303
vdb-entrytechnical-description
https://vuldb.com/vuln/367303/cti
signaturepermissions-required
https://vuldb.com/submit/818454
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

wxhwxhwxh_mie (VulDB User)
.