CVE-2026-9482

Deferred Deferred - Pending Action

Stack-Based Buffer Overflow in Edimax EW-7438RPn Router

Publication date: 2026-05-25

Last updated on: 2026-05-28

Assigner: VulDB

Description

A vulnerability has been found in Edimax EW-7438RPn 1.31. This impacts the function formSDHCP of the file /goform/formSDHCP. Such manipulation of the argument submit-url leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-25

Last Modified

2026-05-28

Generated

2026-07-06

AI Q&A

2026-05-26

EPSS Evaluated

2026-07-04

NVD

CVE-2026-9482

EUVD

EUVD-2026-31714

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 formSDHCP located in the file /goform/formSDHCP. It involves 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 vulnerability.

The exploit has been publicly disclosed, and the vendor was contacted but did not respond.

Impact Analysis

Exploitation of this vulnerability can lead to a stack-based buffer overflow, which may allow an attacker to execute arbitrary code on the affected device remotely.

This can result in unauthorized control over the device, potentially leading to data theft, disruption of network services, or using the device as a foothold for further attacks within a network.

Given the high CVSS scores (up to 9.0 in version 2.0), the impact is considered severe.

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