CVE-2021-32986 Information

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.

CVSS Vector

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

Reference

https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8