What is CVE-2021-3774?

CVE-2021-3774 is a high-severity vulnerability in Meross Smart Wi-Fi 2 Way Wall Switch, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.4/10. Published 2021-11-05.

How severe is CVE-2021-3774?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Meross Smart Wi-Fi 2 Way Wall Switch

CVE-2021-3774

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.

EPSS: 0.007 (49.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.

Affected products

Meross Smart Wi-fi 2 Way Wall Switch — versions 0
Meross Mss550x
Meross Mss550x_firmware

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

cve-coordination@incibe.es (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2021-3774?: CVE-2021-3774 is a high-severity vulnerability in Meross Smart Wi-Fi 2 Way Wall Switch, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.4/10. Published 2021-11-05.
How severe is CVE-2021-3774?: High severity. CVSS v3 base score is 7.4 out of 10.