Moxa NPort IA5150A/IA5250A Series Improper Access Control (CVE-2020-27149)

medium Tenable OT Security Plugin ID 501444


The remote OT asset is affected by a vulnerability.


By exploiting a vulnerability in NPort IA5150A/IA5250A Series before version 1.5, a user with Read Only privilege level can send requests via the web console to have the device's configuration changed.

This plugin only works with Tenable.ot.
Please visit for more information.


Refer to the vendor advisory.

See Also

Plugin Details

Severity: Medium

ID: 501444

Version: 1.3

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 2/21/2024

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS Score Source: CVE-2020-27149


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:moxa:nport_ia5150a_firmware, cpe:/o:moxa:nport_ia5250a_firmware, cpe:/o:moxa:nport_ia5450a_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 5/14/2021

Vulnerability Publication Date: 5/14/2021

Reference Information

CVE: CVE-2020-27149