CVE-2025-55069 - CVE House

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Status published High CVE-2025-55069

AutomationDirect CLICK PLUS Predictable Seed in Pseudo-Random Number Generator

8.7 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Luca Borzacchiello and Diego Zaffaroni of Nozomi Networks reported these vulnerabilities to Automation Direct.

References

More from AutomationDirect

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AutomationDirect CLICK Programmable Logic Controller Weak Encoding for Password

AutomationDirect Productivity Suite Incorrect Permission Assignment for Critical Resource

AutomationDirect Productivity Suite Relative Path Traversal

AutomationDirect Productivity Suite Weak Password Recovery Mechanism for Forgotten Password

AutomationDirect Productivity Suite Binding to an Unrestricted IP Address CWE-1327

Affected Vendor

AutomationDirect

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Affected Software

CLICK PLUS C0-0x CPU firmware, CLICK PLUS C0-1x CPU firmware, CLICK PLUS C2-x CPU firmware

Vulnerable Versions:

0

Timeline

Official Publish: September 23rd, 2025

Last Modified: September 24th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

Weaknesses (CWE)

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.