CVE-2026-9463

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 flaw has been found in Edimax EW-7438RPn 1.31. Affected by this issue is the function formLicence of the file /goform/formLicence. This manipulation of the argument submit-url causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been published 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-2026-9463

EUVD

EUVD-2026-31681

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 is a stack-based buffer overflow found in the Edimax EW-7438RPn device, specifically in the function formLicence within the file /goform/formLicence. It occurs due to improper handling of the argument submit-url, which can be manipulated by an attacker.

The flaw can be exploited remotely, meaning an attacker does not need physical access to the device to initiate the attack.

The exploit for this vulnerability has already been published, increasing the risk of it being used maliciously.

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.

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

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