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VULNERABILITIES

CVE-2025-55069 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

A predictable seed in pseudo-random number generator vulnerability has been discovered in firmware version 3.60 of the Click Plus PLC. The vulnerability relies on the fact that the software implements a predictable seed for its pseudo-random number generator, which compromises the security of the generated private keys.

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.automationdirect.com/support/software-downloads [email protected]Vendor
https://www.cisa.gov/news-events/ics-advisories/icsa-25-266-01 [email protected]AdvisoryBundleRemedy

Weakness Enumeration

CWE-IDCWE NameSource
CWE-337Predictable Seed in Pseudo-Random Number Generator (PRNG)[email protected]

Affected Products

ProductVersions
AutomationDirect Click Plus C0-0x CPU
< 3.71

CPE

  • cpe:2.3:o:automationdirect:click_plc_firmware:*:*:*:*:*:*:*:*

Remediation

  • Upgrade: 3.80moderate efforthttps://www.automationdirect.com/support/software-downloads
  • Mitigation:low effort

    Disconnect the CLICK PLUS PLC from external networks (e.g., the internet or corporate LAN) to reduce exposure.

  • Mitigation:low effort

    Use only trusted, dedicated internal networks or air-gapped systems for device communication.

  • Mitigation:low effort

    Restrict both physical and logical access to authorized personnel only.

  • Mitigation:low effort

    Configure whitelisting so that only trusted, pre-approved applications are allowed to run. Block any unauthorized software.

  • Mitigation:low effort

    Use antivirus or EDR tools and configure host-based firewalls to block unauthorized access attempts.

  • Mitigation:low effort

    Enable and regularly review system logs to detect suspicious or unauthorized activity.

  • Mitigation:low effort

    Maintain secure, tested backups of the PLC and its configurations to minimize downtime in case of an incident.

  • Mitigation:low effort

    Continuously evaluate risks associated with running outdated firmware and adjust compensating measures accordingly.

AutomationDirect Click Plus C0-1x CPU
All versions

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • No remediation found in references.
AutomationDirect Click Plus C2-x CPU
All versions

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-55069
NVD Published Date:
Sep 23, 2025
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2025-55069 Details - Not Deferred