title: NPort 5000 Series Firmware Improper Validation of Integrity Check Vulnerability
description: 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.
problem types: CWE-354 Improper Validation of Integrity Check Value
affected:
{
defaultStatus: unaffected
product: NPort 5000AI-M12 Series
vendor: Moxa
versions:
lessThanOrEqual: 1.5, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort 5100 Series
vendor: Moxa
versions:
lessThanOrEqual: 3.10, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort 5100A Series
vendor: Moxa
versions:
lessThanOrEqual: 1.6, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort 5200 Series
vendor: Moxa
versions:
lessThanOrEqual: 2.12, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort 5200A Series
vendor: Moxa
versions:
lessThanOrEqual: 1.6, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort 5400 Series
vendor: Moxa
versions:
lessThanOrEqual: 3.14, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort 5600 Series
vendor: Moxa
versions:
lessThanOrEqual: 3.11, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort 5600-DT Series
vendor: Moxa
versions:
lessThanOrEqual: 2.9, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort IA5000 Series
vendor: Moxa
versions:
lessThanOrEqual: 2.1, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort IA5000A Series
vendor: Moxa
versions:
lessThanOrEqual: 2.0, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort IA5000A-I/O Series
vendor: Moxa
versions:
lessThanOrEqual: 2.0, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort IAW5000A-I/O Series
vendor: Moxa
versions:
lessThanOrEqual: 2.2, status: affected, version: 1.0, versionType: custom
}
{
defaultStatus: unaffected
product: NPort P5150A Series
vendor: Moxa
versions:
lessThanOrEqual: 1.6, status: affected, version: 1.0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: HIGH
privilegesRequired: HIGH
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Due to design restrictions, we could not fix this vulnerability in NPort 5000 Series. We suggest users follow the instructions in the  hardening guide https://www.moxa.com/getmedia/67b5e549-a125-4a6a-b99b-23017c75cfc1/moxa-the-security-hardening-guide-for-the-nport-5000-series-tech-note-v1.1.pdf  in order to mitigate this vulnerability. Additionally, refer to the following mitigation measures to deploy the product in an appropriate product security context.
Moxa recommends users follow these CISA recommendations. Users should
*  Reduce network exposure by ensuring that all control system devices and systems are not accessible from the Internet.
*  Place control system networks and remote devices behind firewalls, isolating them from business networks.
*  When remote access is necessary, employ secure methods such as Virtual Private Networks (VPNs). It is important to note that VPNs may have vulnerabilities and should be kept up to date with the latest available version. Remember that the security of a VPN depends on the security of its connected devices.