CVE-2021-3774 - CVE House
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Status published High CVE-2021-3774

Meross MSS550X Missing Encryption of Sensitive Data

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Gerard Fuguet Morales

Affected Vendor

Affected Software

Meross Smart Wi-Fi 2 Way Wall Switch
Vulnerable Versions:
0

Timeline

Official Publish: November 5th, 2021
Last Modified: April 23rd, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Weaknesses (CWE)