CVE-2021-3774 HIGH

CVE-2021-3774: Meross MSS550X Missing Encryption of Sensitive Data

Vendor Meross
Product Meross Smart Wi-Fi 2 Way Wall Switch
Weakness CWE-319 · Cleartext transmission
Published November 5, 2021
Last update April 23, 2025
View on NVD All CVEs

CVSS base score

7.4/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 5, 2021 CVE published
April 23, 2025 Record updated