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TI-2025-34759 Aliases CVE-2025-55069GHSA-mqmm-6427-xmx3

AutomationDirect CLICK PLUS Predictable Seed in Pseudo-Random Number Generator

Priority LOW 39CWE-337Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00308 23rd percentileScored 2026-11-07
Fix Fixed CLICK PLUS C0-0x CPU firmware (AutomationDirect): v3.71CLICK PLUS C0-1x CPU firmware (AutomationDirect): v3.71+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AutomationDirectCLICK PLUS C0-0x CPU firmwarebefore v3.71v3.71Patch availableCNA
AutomationDirectCLICK PLUS C0-1x CPU firmwarebefore v3.71v3.71Patch availableCNA
AutomationDirectCLICK PLUS C2-x CPU firmwarebefore v3.71v3.71Patch availableCNA
  • CLICK PLUS C0-0x CPU firmware VendorAutomationDirect Affected before v3.71 Fixed in v3.71 Patch available CNA
  • CLICK PLUS C0-1x CPU firmware VendorAutomationDirect Affected before v3.71 Fixed in v3.71 Patch available CNA
  • CLICK PLUS C2-x CPU firmware VendorAutomationDirect Affected before v3.71 Fixed in v3.71 Patch available CNA

Remediation

  • Fix · CNA CLICK PLUS C0-0x CPU firmware (AutomationDirect) Fixed in v3.71
  • Fix · CNA CLICK PLUS C0-1x CPU firmware (AutomationDirect) Fixed in v3.71
  • Fix · CNA CLICK PLUS C2-x CPU firmware (AutomationDirect) Fixed in v3.71

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    AutomationDirect CLICK PLUS C0-0x CPU firmware, CLICK PLUS C0-1x CPU firmware, CLICK PLUS C2-x CPU firmware v3.71

    7 records Highest priority Priority LOW 7 LOW

    Other records, highest priority first

    • TI-2025-37028 AutomationDirect CLICK PLUS Use of a Broken or Risky Cryptographic AlgorithmPriority LOW 38
    • TI-2025-36230 AutomationDirect CLICK PLUS Improper Resource Shutdown or ReleasePriority LOW 36
    • TI-2025-35912 AutomationDirect CLICK PLUS Use of Hard-coded Cryptographic KeyPriority LOW 36
    Show all 7 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-55069
  2. 2026-10-03 Alias added: GHSA-mqmm-6427-xmx3

References

Other 2

  • TI-2024-14467 A leftover debug code vulnerability exists in the Telnet Diagnostic Interface… CVSS 3.1CRITICAL 9.8
  • TI-2024-14780 Improper access control in AutomationDirect P3-550E CVSS 3.1CRITICAL 9.1
  • TI-2025-24868 AutomationDirect MB-Gateway Missing Authentication for Critical Function CVSS 4.0CRITICAL 10.0
  • TI-2024-16461 Stack-based buffer overflow in AutomationDirect P3-550E CVSS 3.1CRITICAL 9.8
  • TI-2024-16460 Stack-based buffer overflow in AutomationDirect P3-550E CVSS 3.1CRITICAL 9.8
  • TI-2021-12594 Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel CVSS 3.1CRITICAL 9.8
See all 66 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences