CVE-2021-3774

Meross MSS550X Missing Encryption of Sensitive Data

Published Nov 5, 2021 CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Description
Meross Smart Wi-Fi 2 Way Wall Switch (MSS550X), on its 3.1.3 version and before, creates an open Wi-Fi Access Point without the required security measures in its initial setup. This could allow a remote attacker to obtain the Wi-Fi SSID as well as the password configured by the user from Meross app via Http/JSON plain request.

Remediation

Vendor Solution

This vulnerability has been solved by Meross in MSS550X version 3.2.3.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-27043 Meross Smart Wi-Fi 2 Way Wall Switch (MSS550X), on its 3.1.3 version and before, creates an open Wi-Fi Access Point without the required security measures in its initial setup. This could allow a remote attacker to obtain the Wi-Fi SSID as well as the password configured by the user from Meross app via Http/JSON plain request.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
INCIBE
Published
Updated
Apr 23, 2025, 7:24 PM
Reserved
Sep 6, 2021, 12:00 AM
Status
Modified
Published
Nov 5, 2021, 9:15 PM
Modified
Jun 17, 2026, 4:05 AM