What’s Vulnerable › Vulnerabilities

CVE-2020-27184

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-14 · updated 2026-06-17
• Weakness: CWE-319

Description

The NPort IA5000A Series devices use Telnet as one of the network device management services. Telnet does not support the encryption of client-server communications, making it vulnerable to Man-in-the-Middle attacks.

Affected products

• Moxa Nport Ia5150A Firmware: through 1.4
• Moxa Nport Ia5250A Firmware: through 1.4
• Moxa Nport Ia5450A Firmware: through 1.7

References

• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2021/05/11/klcert-20-020%2C
• https://www.moxa.com/en/support/product-support/security-advisory/nport-ia5000a-serial-device-servers-vulnerabilities
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2021/05/11/klcert-20-020%2C
• https://www.moxa.com/en/support/product-support/security-advisory/nport-ia5000a-serial-device-servers-vulnerabilities

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