Stack-Based Buffer Overflow in Edimax EW-7438RPn 1.31
CVE-2026-9479

8.7HIGH

Key Information:

Vendor

Edimax

Status
Ew-7438rpn
Vendor
CVE Published:
25 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9479?

A stack-based buffer overflow vulnerability has been identified in the Edimax EW-7438RPn 1.31 router. This flaw resides in the 'formLogout' function of the /goform/formLogout file, where inadequate validation of the 'submit-url' argument could be exploited to corrupt memory, leading to potential unauthorized access. The vulnerability can be exploited remotely, allowing attackers to execute arbitrary code on the device. Despite early disclosure attempts, the vendor has not responded, raising concerns about the device's security and the urgency for users to take precautionary measures.

Affected Version(s)

EW-7438RPn 1.31

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-2026-9479 - Proof of Concept

References

https://vuldb.com/vuln/365460
vdb-entrytechnical-description
https://vuldb.com/vuln/365460/cti
signaturepermissions-required
https://vuldb.com/submit/813901
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

Buoy (VulDB User)
VulDB CNA Team
.