How severe is CVE-2020-27184?

CVE-2020-27184 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-27184 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27184?

CVE-2020-27184 primarily affects Moxa Nport Ia5150a Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-27184?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-27184 published?

CVE-2020-27184 was published on 2021-05-14 and last updated on 2026-06-17.

CVE-2020-27184

CVE-2020-27184 is a medium-severity vulnerability in Moxa Nport Ia5150a Firmware with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Moxa Nport Ia5150a Firmware
Published: 2021-05-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-27184?: 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.
How severe is CVE-2020-27184?: CVE-2020-27184 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-27184 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27184?: CVE-2020-27184 primarily affects Moxa Nport Ia5150a Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-27184?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-27184 published?: CVE-2020-27184 was published on 2021-05-14 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:moxa:nport_ia5150a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:nport_ia5250a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:nport_ia5450a_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Moxa Nport Ia5150a Firmware

CVE-2020-27185 — High (CVSS 7.5): Cleartext transmission of sensitive information via Moxa Service in NPort IA5000A series serial devices. Successfully…
CVE-2020-27150 — High (CVSS 7.5): In multiple versions of NPort IA5000A Series, the result of exporting a device’s configuration contains the passwords…
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CVE-2020-27149 — Medium (CVSS 6.5): By exploiting a vulnerability in NPort IA5150A/IA5250A Series before version 1.5, a user with “Read Only” privilege…

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