Moxa ioLogik 2542-HSPA Series Controllers and IOs, and IOxpress Configuration Utility Incorrectly Specified Destination in a Communication Channel (CVE-2019-18242)

high Tenable OT Security Plugin ID 501492


The remote OT asset is affected by a vulnerability.


In Moxa ioLogik 2500 series firmware, Version 3.0 or lower, and IOxpress configuration utility, Version 2.3.0 or lower, frequent and multiple requests for short-term use may cause the web server to fail.

This plugin only works with Tenable.ot.
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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 developed a solution to address these vulnerabilities: Please contact Moxa Technical Support for a security patch.

Please see Moxa’s security advisory for more information.

See Also

Plugin Details

Severity: High

ID: 501492

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-2019-18242


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:iologik_2512-hspa-t_firmware, cpe:/o:moxa:iologik_2512-hspa_firmware, cpe:/o:moxa:iologik_2512-t_firmware, cpe:/o:moxa:iologik_2512-wl1-eu-t_firmware, cpe:/o:moxa:iologik_2512-wl1-eu_firmware, cpe:/o:moxa:iologik_2512-wl1-jp-t_firmware, cpe:/o:moxa:iologik_2512-wl1-jp_firmware, cpe:/o:moxa:iologik_2512-wl1-us-t_firmware, cpe:/o:moxa:iologik_2512-wl1-us_firmware, cpe:/o:moxa:iologik_2512_firmware, cpe:/o:moxa:iologik_2542-hspa-t_firmware, cpe:/o:moxa:iologik_2542-hspa_firmware, cpe:/o:moxa:iologik_2542-t_firmware, cpe:/o:moxa:iologik_2542-wl1-eu-t_firmware, cpe:/o:moxa:iologik_2542-wl1-eu_firmware, cpe:/o:moxa:iologik_2542-wl1-jp-t_firmware, cpe:/o:moxa:iologik_2542-wl1-jp_firmware, cpe:/o:moxa:iologik_2542-wl1-us-t_firmware, cpe:/o:moxa:iologik_2542-wl1-us_firmware, cpe:/o:moxa:iologik_2542_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2020

Vulnerability Publication Date: 3/24/2020

Reference Information

CVE: CVE-2019-18242