What’s Vulnerable › Vulnerabilities

CVE-2021-46082

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-18 · updated 2026-06-17
• Weakness: CWE-401

Description

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: through 2.1
• Moxa Mgate 5101-Pbm-Mn Firmware: through 2.1
• Moxa Mgate 5109-T Firmware: through 2.2
• Moxa Mgate 5109 Firmware: through 2.2
• Moxa Tn-5916-Wv-Ct-T Firmware: through 3.1
• Moxa Tn-5916-Wv-T Firmware: through 3.1

References

• https://www.moxa.com/en/support/product-support/security-advisory/mgate-5109-5101-protocol-gateways-vulnerability
• https://www.moxa.com/en/support/product-support/security-advisory/tn-5900-secure-routers-vulnerability
• https://www.moxa.com/en/support/product-support/security-advisory/mgate-5109-5101-protocol-gateways-vulnerability
• https://www.moxa.com/en/support/product-support/security-advisory/tn-5900-secure-routers-vulnerability

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