CVE-2021-4161: Moxa Mgate MB3180 Firmware

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

The affected products contain vulnerable firmware, which could allow an attacker to sniff the traffic and decrypt login credential details. This could give an attacker admin rights through the HTTP web server.

Affected products

• Moxa Mgate MB3180 Firmware: up to and including 2.2
• Moxa Mgate MB3280 Firmware: up to and including 4.1
• Moxa Mgate MB3480 Firmware: up to and including 3.2

Published 2021-12-27. Last modified 2026-06-17.