CVE-2021-32976: Moxa Nport IAW5150A-12i/o Firmware

Critical severity, CVSS 9.8. EPSS: 2.8% chance of exploitation in the next 30 days.

Five buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier may allow a remote attacker to initiate a denial-of-service attack and execute arbitrary code.

Affected products

• Moxa Nport IAW5150A-12i/o Firmware: up to and including 2.2
• Moxa Nport IAW5150A-6i/o Firmware: up to and including 2.2
• Moxa Nport IAW5250A-12i/o Firmware: up to and including 2.2
• Moxa Nport IAW5250A-6i/o Firmware: up to and including 2.2

Published 2022-04-01. Last modified 2026-06-17.