Stack-based Buffer Overflow in Edimax EW-7438RPn by Edimax
CVE-2026-9480

8.7HIGH

Key Information:

Vendor

Edimax

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9480?

A stack-based buffer overflow vulnerability has been identified in the Edimax EW-7438RPn version 1.31, specifically within the formrefresh function located in the /goform/formrefresh file. This vulnerability arises from improper handling of the submit-url argument, which could allow an attacker to execute a remote exploit. The vulnerability has been made public and poses significant risks, as the vendor has not provided a response to early disclosure attempts.

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-2026-9480 - Proof of Concept

References

https://vuldb.com/vuln/365461
vdb-entrytechnical-description
https://vuldb.com/vuln/365461/cti
signaturepermissions-required
https://vuldb.com/submit/813902
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
.