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CVE-2021-32986

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CVE-2021-32986

Published: Apr 4, 2022

Modified: Apr 16, 2025

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

After Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, the unlocked state does not timeout. If the programming software is interrupted, the PLC remains unlocked. All subsequent programming connections are allowed without authorization. The PLC is only relocked by a power cycle, or when the programming software disconnects correctly.

VendorProductVersions

Automation Direct

CLICK PLC CPU Modules: C0-1x CPUs

affected
unspecified - < 3.00

Weaknesses (CWE)

CWE-288

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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