CVE-2021-46082: Moxa Mgate 5101-Pbm-Mn-T Firmware

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

Moxa TN-5900 v3.1 series routers, MGate 5109 v2.2 series protocol gateways, and MGate 5101-PBM-MN v2.1 series protocol gateways were discovered to contain a memory leak which allows attackers to cause a Denial of Service (DoS) via crafted packets.

Affected products

• Moxa Mgate 5101-Pbm-Mn-T Firmware: up to and including 2.1
• Moxa Mgate 5101-Pbm-Mn Firmware: up to and including 2.1
• Moxa Mgate 5109-T Firmware: up to and including 2.2
• Moxa Mgate 5109 Firmware: up to and including 2.2
• Moxa Tn-5916-Wv-Ct-T Firmware: up to and including 3.1
• Moxa Tn-5916-Wv-T Firmware: up to and including 3.1

Published 2022-02-18. Last modified 2026-06-17.