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NEXCOM NIO50

Monitor5.3ICS-CERT ICSA-20-308-02Nov 3, 2020
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

The NEXCOM NIO 50 contains input validation flaws (CWE-20) that allow an unauthenticated attacker with network access to view sensitive information and cause a denial-of-service condition. NEXCOM has designated the NIO 50 as end-of-life and no longer provides support or updates. The vulnerabilities are due to improper input validation and insecure transmission of sensitive data (CWE-319).

What this means
What could happen
An attacker with network access to the NIO 50 could read sensitive information or cause the device to become unavailable, disrupting any connected control or monitoring functions.
Who's at risk
Organizations operating NEXCOM NIO 50 industrial networking devices, particularly those used in water treatment, power distribution, or other critical infrastructure monitoring and control applications where network connectivity is essential.
How it could be exploited
An attacker on the network sends specially crafted input to the NIO 50 without authentication. The device fails to properly validate the input, allowing the attacker to leak sensitive data or trigger a denial-of-service condition that stops the device from responding.
Prerequisites
  • Network access to the NIO 50 (no authentication required)
  • Device must be reachable from attacker's network segment
No patch available (end-of-life product)Remotely exploitableNo authentication requiredLow complexity attackAffects availability and confidentiality
Exploitability
Low exploit probability (EPSS 0.4%)
Affected products (1)
ProductAffected VersionsFix Status
NIO 50: All versionsAll versionsNo fix (EOL)
Remediation & Mitigation
0/3
Do now
0/1
HARDENINGIsolate NIO 50 behind a firewall and restrict network access to trusted hosts only. Do not expose to the Internet.
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXRemove NIO 50 from service or replace with a supported alternative. NEXCOM no longer maintains this product.
Mitigations - no patch available
0/1
NIO 50: All versions has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGSegment the NIO 50 and any connected control systems onto a separate network isolated from business systems.
View full CISA ICS-CERT advisory
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