What is CVE-2022-2043?

CVE-2022-2043 is a high-severity vulnerability in Moxa, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-08-31.

How severe is CVE-2022-2043?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Moxa

CVE-2022-2043

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

Vulnerability class: Buffer Overflow

Published 2022-08-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

Moxa — versions Firmware Versions 2.10
Moxa Nport 5110
Moxa Nport 5110 Firmware — versions 2.10

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.cisa.gov/uscert/ics/advisories/icsa-22-207-04 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2022-2043?: CVE-2022-2043 is a high-severity vulnerability in Moxa, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-08-31.
How severe is CVE-2022-2043?: High severity. CVSS v3 base score is 7.5 out of 10.