Moxa NPort 5110, 5130, and 5150 Uncontrolled Resource Consumption (CVE-2017-14028)

high Tenable OT Security Plugin ID 501460


The remote OT asset is affected by a vulnerability.


A Resource Exhaustion issue was discovered in Moxa NPort 5110 Version 2.2, NPort 5110 Version 2.4, NPort 5110 Version 2.6, NPort 5110 Version 2.7, NPort 5130 Version 3.7 and prior, and NPort 5150 Version 3.7 and prior. An attacker may be able to exhaust memory resources by sending a large amount of TCP SYN packets.

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The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at

Moxa has produced new firmware for the affected devices that can be downloaded from:

NPort 5110

NPort 5130 and NPort 5150

See Also

Plugin Details

Severity: High

ID: 501460

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2017-14028


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:nport_5110_firmware:2.2, cpe:/o:moxa:nport_5110_firmware:2.4, cpe:/o:moxa:nport_5110_firmware:2.6, cpe:/o:moxa:nport_5110_firmware:2.7, cpe:/o:moxa:nport_5130_firmware, cpe:/o:moxa:nport_5150_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 11/16/2017

Vulnerability Publication Date: 11/16/2017

Reference Information

CVE: CVE-2017-14028

CWE: 400