Stack-Based Buffer Overflow in Edimax EW-7438RPn Router
CVE-2026-9481

8.7HIGH

Key Information:

Vendor

Edimax

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9481?

A significant flaw has been identified in the Edimax EW-7438RPn version 1.31 that involves a stack-based buffer overflow during the handling of the submit-url argument in the formStats function of the /goform/formStats file. This issue enables attackers to exploit the vulnerability remotely, potentially leading to unauthorized access or denial of service. Despite early disclosure attempts, the vendor has not responded, leaving users at risk as the exploit has been publicly published.

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-2026-9481 - Proof of Concept

References

https://vuldb.com/vuln/365462
vdb-entrytechnical-description
https://vuldb.com/vuln/365462/cti
signaturepermissions-required
https://vuldb.com/submit/813903
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
.