CVE-2020-27184
The NPort IA5000A Series devices use Telnet as one of the network device management services....
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
5.9
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.
- Record
CVE-2020-27184- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-319
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-27184- Updated
- 2026-11-02
EUVDEUVD-2020-19707 No score
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.
- Record
EUVD-2020-19707- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7cmj-xmp5-mmr2
5.9
The NPort IA5000A Series devices use Telnet as one of the network device management services....
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.
- Record
GHSA-7cmj-xmp5-mmr2- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-326
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-27184 is a medium vulnerability (CVSS 5.9) in Moxa Nport Ia5150a Firmware, published May 14, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. No source names a fixed version.
References
moxa.com/en/support/product-support/security-advisory/nport-ia5000a-serial-device-servers-vulnerabilities
ics-cert.kaspersky.com/advisories/klcert-advisories/2021/05/11/klcert-20-020%2C
nvd.nist.gov/vuln/detail/CVE-2020-27184
ics-cert.kaspersky.com/advisories/klcert-advisories/2021/05/11/klcert-20-020,
github.com/advisories/GHSA-7cmj-xmp5-mmr2