CVE-2025-25051

AutomationDirect CLICK Programmable Logic Controller Plaintext Storage of a Password

Published Jan 22, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
An attacker could decrypt sensitive data, impersonate legitimate users
or devices, and potentially gain access to network resources for lateral
attacks.

Remediation

Vendor Solution

AutomationDirect recommends that users update CLICK PLUS and firmware to V3.90.


Vendor Workaround

If the update cannot be applied right away, the following compensating controls are recommended until the upgrade can be performed: * Network Isolation – Disconnect the CLICK PLUS PLC from external networks (e.g., the internet or corporate LAN) to reduce exposure. * Secure Communications – Use only trusted, dedicated internal networks or air-gapped systems for device communication. * Access Control – Restrict both physical and logical access to authorized personnel only. * Application Whitelisting – Configure whitelisting so that only trusted, pre-approved applications are allowed to run. Block any unauthorized software. * Endpoint Protection – Use antivirus or EDR tools and configure host-based firewalls to block unauthorized access attempts. * Logging & Monitoring – Enable and regularly review system logs to detect suspicious or unauthorized activity. * Backup & Recovery – Maintain secure, tested backups of the PLC and its configurations to minimize downtime in case of an incident. * Ongoing Risk Assessment – Continuously evaluate risks associated with running outdated firmware and adjust compensating measures accordingly.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Automationdirect
Automationdirect click Plc
Vendors & Products Automationdirect
Automationdirect click Plc
Type Values Removed Values Added
Description An attacker could decrypt sensitive data, impersonate legitimate users or devices, and potentially gain access to network resources for lateral attacks.
Title AutomationDirect CLICK Programmable Logic Controller Plaintext Storage of a Password
Weaknesses CWE-256
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Jan 23, 2026, 8:10 PM
Reserved
Feb 5, 2025, 3:36 PM
Status
Deferred
Published
Jan 22, 2026, 11:15 PM
Modified
Jun 17, 2026, 9:00 AM