What is CVE-2023-4929?

CVE-2023-4929 is a medium-severity vulnerability in Moxa Nport 5000ai-M12 Series, classified under Improper Validation of Integrity Check Value. CVSS score: 6.5/10. Published 2023-10-03.

How severe is CVE-2023-4929?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Moxa Nport 5000ai-M12 Series

CVE-2023-4929

All firmware versions of the NPort 5000 Series are affected by an improper validation of integrity check vulnerability. This vulnerability results from insufficient checks on firmware updates or upgrades, potentially allowing malicious users to manipulate the firmware and gain control of devices.

Published 2023-10-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (16.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Moxa Nport 5000ai-M12 Series — versions 1.0
Moxa Nport 5100a Series — versions 1.0
Moxa Nport 5100 Series — versions 1.0
Moxa Nport 5110
Moxa Nport 5110a
Moxa Nport 5110a Firmware
Moxa Nport 5110a-T
Moxa Nport 5110a-T Firmware
Moxa Nport 5110 Firmware
Moxa Nport 5110-T

Weakness classification (CWE)

CWE-354 — Improper Validation of Integrity Check Value

References

www.moxa.com/en/support/product-support/security-advisory/mpsa-233328-nport-500… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-4929?: CVE-2023-4929 is a medium-severity vulnerability in Moxa Nport 5000ai-M12 Series, classified under Improper Validation of Integrity Check Value. CVSS score: 6.5/10. Published 2023-10-03.
How severe is CVE-2023-4929?: Medium severity. CVSS v3 base score is 6.5 out of 10.