CVE-2021-32986 Vulnerability Details

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CVE-2021-32986 Metadata Quick Info

CVE Published: 04/04/2022 | CVE Updated: 03/08/2024 | CVE Year: 2021
Source: icscert | Vendor: Automation Direct | Product: CLICK PLC CPU Modules: C0-1x CPUs
Status : PUBLISHED

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CVE-2021-32986 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.

Metrics

CVSS Version: 3.1 | Base Score: 9.8 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

l➤ Exploitability Metrics:
    Attack Vector (AV)* NETWORK
    Attack Complexity (AC)* LOW
    Privileges Required (PR)* NONE
    User Interaction (UI)* NONE
    Scope (S)* UNCHANGED

l➤ Impact Metrics:
    Confidentiality Impact (C)* HIGH
    Integrity Impact (I)* HIGH
    Availability Impact (A)* HIGH

Weakness Enumeration (CWE)

CWE-ID: CWE-288
CWE Name: CWE-288: Authentication Bypass Using an Alternate Path or Channel
Source: Automation Direct

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-ID:
CAPEC Description:


Source: NVD (National Vulnerability Database).