MOXA NPort 5110 Out-of-bounds Write

published 2022-08-31 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34346

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

MOXA NPort 5110: Firmware Versions 2.10 is vulnerable to an out-of-bounds write that can cause the device to become unresponsive.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-22-207-04 updated 2022-07-26 cvss 7.5

MOXA NPort 5110

MOXA NPort 5110 2.1
affected: mitigation “MOXA recommends contacting Technical Support for the security patch.” moxa.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 18 mo ago (2025-04-16)

Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

MOXA MOXA

Classification

Weakness

CWE-787 Out-of-bounds Write

References

cisa.gov /uscert/ics/advisories/icsa-22-207-04
third-party-advisory, us-government-resource

Sources

CVE List CVE-2022-2043
NVD CVE-2022-2043

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary