CVE-2021-32974: moxa nport iaw5000a-i/o series firmware Improper Input Validation
CVSS: 10.0v2.0HighModified
Published 01-04-2022Last modified 16-04-2025
Vulnerability summary
CVE-2021-32974 is a high (CVSS 10.0) Improper Input Validation vulnerability in moxa nport iaw5000a-i/o series firmware. EPSS estimates a 2.70% chance of exploitation in the next 30 days, higher than 85.7% of scored vulnerabilities.
CVSS score
10.0/10
010
High · v2.0 (NVD)EPSS score
2.70%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 01-04-2022PublishedVulnerability first disclosed.
- 16-04-2025Last modifiedVulnerability information updated.
Description
Improper input validation in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier may allow a remote attacker to execute commands.
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 10.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
2.70%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
0.00 pp
From 2.70% on 21-09-2026
21-09-202621-10-2026
EPSS score2.70%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Affected systems
Moxa5 products
- nport iaw5000a-i/o series firmware≥ unspecified, ≤ 2.2
- nport_iaw5150a-12i\/o_firmware≤ 2.2
- nport_iaw5150a-6i\/o_firmware≤ 2.2
- nport_iaw5250a-12i\/o_firmware≤ 2.2
- nport_iaw5250a-6i\/o_firmware≤ 2.2
1 vendor · 5 products
References
2 links
www.cisa.gov/uscert/ics/advisories/icsa-21-187-01X Refsource CONFIRMMitigationThird Party AdvisoryUS Government Resource