What is CVE-2020-25153?

CVE-2020-25153 is a critical-severity vulnerability in Moxa Nport Iaw5000a-I/o, classified under Weak Password Requirements. CVSS score: 9.8/10. Published 2020-12-23.

How severe is CVE-2020-25153?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Moxa Nport Iaw5000a-I/o

CVE-2020-25153

The built-in web service for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower does not require users to have strong passwords.

Published 2020-12-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: +0.000

Affected products

Moxa Nport Iaw5000a-I/o — versions unspecified
Moxa Nport Iaw5000a-I\/o
Moxa Nport Iaw5000a-I\/o Firmware

Weakness classification (CWE)

CWE-521 — Weak Password Requirements

References

us-cert.cisa.gov/ics/advisories/icsa-20-287-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2020-25153?: CVE-2020-25153 is a critical-severity vulnerability in Moxa Nport Iaw5000a-I/o, classified under Weak Password Requirements. CVSS score: 9.8/10. Published 2020-12-23.
How severe is CVE-2020-25153?: Critical severity. CVSS v3 base score is 9.8 out of 10.