THREATPORT/VULNERABILITY/CVE-2018-17924
HIGH SEVERITY

CVE-2018-17924

Micrologix 1400 Firmware vulnerability

CVSS
8.6
EPSS
4.3%
EPSS pct
90th
Exploited
No known
Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix Communications Modules An unauthenticated, remote threat actor could send a CIP connection request to an affected device, and upon successful connection, send a new IP configuration to the affected device even if the controller in the system is set to Hard RUN mode. When the affected device accepts this new IP configuration, a loss of communication occurs between the device and the rest of the system as the system traffic is still attempting to communicate with the device via the overwritten IP address.
Affected vendor
Rockwellautomation
Affected product
Micrologix 1400 Firmware
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-306 — Missing Authentication for Critical Function
Published
2018-12-07

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 4.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2018-17924

  • Confirm whether Rockwellautomation Micrologix 1400 Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-17924.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-17924

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-17924 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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