Moxa Moxa TN-5900 (CVE-2021-46082)

high Tenable OT Security Plugin ID 501452


The remote OT asset is affected by a vulnerability.


Moxa TN-5900 v3.1 series routers, MGate 5109 v2.2 series protocol gateways, and MGate 5101-PBM-MN v2.1 series protocol gateways were discovered to contain a memory leak which allows attackers to cause a Denial of Service (DoS) via crafted packets.

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Refer to the vendor advisory.

See Also

Plugin Details

Severity: High

ID: 501452

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 8/3/2023

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2021-46082


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:moxa:mgate_5101-pbm-mn-t_firmware, cpe:/o:moxa:mgate_5109_firmware, cpe:/o:moxa:mgate_5101-pbm-mn_firmware, cpe:/o:moxa:mgate_5109-t_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 2/18/2022

Vulnerability Publication Date: 2/18/2022

Reference Information

CVE: CVE-2021-46082

CWE: 401