CVE-2021-33823: Moxa Mgate MB3180 Firmware

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service.

Affected products

• Moxa Mgate MB3180 Firmware: version 2.1 only

Published 2021-06-18. Last modified 2026-06-17.