What’s Vulnerable › Vulnerabilities

CVE-2025-58069: AutomationDirect CLICK PLUS Use of Hard-coded Cryptographic Key

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-23 · updated 2026-10-18
• Weakness: CWE-321

Description

The use of a hard-coded cryptographic key was discovered in firmware version 3.60 of the Click Plus PLC. The vulnerability relies on the fact that the software contains a hard-coded AES key used to protect the initial messages of a new KOPS session.

Affected products

• AutomationDirect CLICK PLUS C0-0x CPU firmware: before v3.71 — fixed in v3.71
• AutomationDirect CLICK PLUS C0-1x CPU firmware: before v3.71 — fixed in v3.71
• AutomationDirect CLICK PLUS C2-x CPU firmware: before v3.71 — fixed in v3.71

How to fix

Upgrade to a fixed version: AutomationDirect CLICK PLUS C0-0x CPU firmware v3.71; AutomationDirect CLICK PLUS C0-1x CPU firmware v3.71; AutomationDirect CLICK PLUS C2-x CPU firmware v3.71. Check the vendor advisory for mitigations.

References

• https://www.automationdirect.com/support/software-downloads
• https://www.cisa.gov/news-events/ics-advisories/icsa-25-266-01

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