Stack-based Buffer Overflow Vulnerability in Edimax EW-7438RPn by Edimax
CVE-2026-9426

8.7HIGH

Key Information:

Vendor

Edimax

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9426?

A stack-based buffer overflow vulnerability has been detected in the Edimax EW-7438RPn version 1.31, affecting the 'formHwSet' function. This vulnerability allows attackers to manipulate certain arguments, including Anntena, MCS, and wlanSSID, leading to potential remote exploitation. The flaw facilitates unauthorized stack memory access which could enable attack vectors for further exploitation. Please note, the vendor has been notified but has not provided a response regarding a fix or mitigation.

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-2026-9426 - Proof of Concept

References

https://vuldb.com/vuln/365407
vdb-entrytechnical-description
https://vuldb.com/vuln/365407/cti
signaturepermissions-required
https://vuldb.com/submit/813894
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

Bond_yes (VulDB User)
VulDB CNA Team
.