What’s Vulnerable › Vulnerabilities

CVE-2021-4161: ICSA-21-357-01 Moxa MGate Protocol Gateways

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-27 · updated 2026-06-17
• Weakness: CWE-319

Description

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: through 2.2
• Moxa Mgate Mb3280 Firmware: through 4.1
• Moxa Mgate Mb3480 Firmware: through 3.2

References

• https://www.cisa.gov/uscert/ics/advisories/icsa-21-357-01
• https://www.cisa.gov/uscert/ics/advisories/icsa-21-357-01

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