CVE-2026-9480

Deferred Deferred - Pending Action

Stack-Based Buffer Overflow in Edimax EW-7438RPn

Publication date: 2026-05-25

Last updated on: 2026-05-25

Assigner: VulDB

Description

A vulnerability was detected in Edimax EW-7438RPn 1.31. The impacted element is the function formrefresh of the file /goform/formrefresh. The manipulation of the argument submit-url results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-25

Last Modified

2026-05-25

Generated

2026-07-06

AI Q&A

2026-05-26

EPSS Evaluated

2026-07-04

NVD

CVE-2026-9480

EUVD

EUVD-2026-31713

Affected Vendors & Products

Vendor	Product	Version / Range
edimax	ew-7438rpn	1.31

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CWE-119	The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Attack-Flow Graph

Executive Summary

This vulnerability exists in the Edimax EW-7438RPn device, specifically in the function formrefresh within the file /goform/formrefresh. It involves the manipulation of the argument submit-url, which leads to a stack-based buffer overflow. This type of vulnerability allows an attacker to overwrite parts of the memory stack, potentially enabling remote code execution or other malicious actions.

The attack can be launched remotely, meaning an attacker does not need physical access to the device to exploit this flaw. Additionally, the exploit code for this vulnerability is publicly available.

Impact Analysis

Exploitation of this vulnerability can lead to severe impacts including unauthorized remote code execution, which may allow attackers to take control of the affected device.

This can result in compromise of device integrity, confidentiality, and availability, potentially allowing attackers to disrupt network operations, steal sensitive information, or use the device as a foothold for further attacks.

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