CVE-2026-30704
Received Received - Intake

Unprotected UART Interface in WDR201A WiFi Extender Enables Hardware Access

Publication date: 2026-03-18

Last updated on: 2026-03-19

Assigner: MITRE

Description
The WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02) exposes an unprotected UART interface through accessible hardware pads on the PCB

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Meta Information

Published
2026-03-18
Last Modified
2026-03-19
Generated
2026-07-06
AI Q&A
2026-03-18
EPSS Evaluated
2026-07-05
NVD
CVE-2026-30704
EUVD
EUVD-2026-12878

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-912 The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators.

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Executive Summary

The vulnerability involves the WiFi Extender WDR201A (hardware version 2.1, firmware LFMZX28040922V1.02) exposing an unprotected UART interface. This interface is accessible through hardware pads on the device's printed circuit board (PCB), which means that an attacker with physical access to the device could potentially connect to this interface without any authentication or protection.

Impact Analysis

Because the UART interface is unprotected and accessible, an attacker with physical access to the device could exploit this to gain unauthorized access to the device's internal functions. This could lead to unauthorized control, modification of device settings, or extraction of sensitive information stored on the device.

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