CVE-2021-3774
7.4 · HIGHOverview
CVE-2021-3774 is a high-severity vulnerability affecting meross mss550x_firmware. It was published on November 5, 2021 and has a CVSS 3.1 base score of 7.4 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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
Check the references section for vendor advisories and patches from meross. Update mss550x_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| meross | mss550x_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-3774?
CVE-2021-3774 is a high-severity vulnerability affecting meross mss550x_firmware. It was published on November 5, 2021 and has a CVSS 3.1 base score of 7.4 (HIGH).
How severe is CVE-2021-3774?
This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-3774?
Check the references section for vendor advisories and patches from meross. Update mss550x_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-3774?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-3774 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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