CVE-2016-9369: moxa nport_5100_series_firmware Improper Authentication
Vulnerability summary
CVE-2016-9369 is a high (CVSS 10.0) Improper Authentication vulnerability in moxa nport_5100_series_firmware. EPSS estimates a 8.80% chance of exploitation in the next 30 days, higher than 95.1% of scored vulnerabilities.
Timeline
- 13-02-2017PublishedVulnerability first disclosed.
- 02-06-2026Last modifiedVulnerability information updated.
Description
An issue was discovered in Moxa NPort 5110 versions prior to 2.6, NPort 5130/5150 Series versions prior to 3.6, NPort 5200 Series versions prior to 2.8, NPort 5400 Series versions prior to 3.11, NPort 5600 Series versions prior to 3.7, NPort 5100A Series & NPort P5150A versions prior to 1.3, NPort 5200A Series versions prior to 1.3, NPort 5150AI-M12 Series versions prior to 1.2, NPort 5250AI-M12 Series versions prior to 1.2, NPort 5450AI-M12 Series versions prior to 1.2, NPort 5600-8-DT Series versions prior to 2.4, NPort 5600-8-DTL Series versions prior to 2.4, NPort 6x50 Series versions prior to 1.13.11, NPort IA5450A versions prior to v1.4. Firmware can be updated over the network without authentication, which may allow remote code execution.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
8.80%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
0.00 pp
From 8.80% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
- CWE-306Missing Authentication for Critical FunctionThe product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Affected systems
Moxa10 products
- nport_5100_series_firmware≤ 2.5 | ≤ 3.5
- nport_5100a_series_firmware≤ 1.2
- nport_5200_series_firmware≤ 2.7
- nport_5200a_series_firmware≤ 1.2
- nport_5400_series_firmware≤ 3.10
1 vendor · 10 products
References
2 links- ics-cert.us-cert.gov/advisories/ICSA-16-336-02X Refsource MISCThird Party AdvisoryUS Government Resource