CVE-2026-12806
Received Received - Intake
Buffer Overflow in Edimax BR-6478AC V2 Firmware

Publication date: 2026-06-21

Last updated on: 2026-06-21

Assigner: VulDB

Description
A vulnerability has been found in Edimax BR-6478AC V2 1.23. The impacted element is the function formWlSiteSurvey of the file /goform/formWlSiteSurvey of the component POST Request Handler. The manipulation of the argument selSSID leads to buffer overflow. It is possible to initiate the attack 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.
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Meta Information
Published
2026-06-21
Last Modified
2026-06-21
Generated
2026-06-22
AI Q&A
2026-06-21
EPSS Evaluated
N/A
NVD
EUVD
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
edimax br-6478ac v2.1.23
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
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.
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Executive Summary

This vulnerability exists in the Edimax BR-6478AC V2 1.23 device, specifically in the function formWlSiteSurvey within the POST Request Handler component. It involves the manipulation of the argument selSSID, which leads to a buffer overflow. This means that an attacker can send specially crafted data remotely to overflow the buffer, potentially causing unexpected behavior or allowing execution of malicious code.

Impact Analysis

The vulnerability can be exploited remotely without user interaction, which makes it particularly dangerous. Successful exploitation can lead to a buffer overflow, potentially allowing an attacker to execute arbitrary code, disrupt device functionality, or gain unauthorized access. This can compromise the security and availability of the affected device.

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