CVE & CISA-KEV Catalog

CVE-2021-32984

CRITICAL
9.8
CVSS v3
NVD

Description

All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.

CWE-288CWE-287Improper Authentication

How to fix

Remediation Available
c0-10are-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-10dd1e-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-10dd2e-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-10dre-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-11are-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-11dd1e-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-11dd2e-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-11dre-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12are-1-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12are-2-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12are-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dd1e-1-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dd1e-2-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dd1e-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dd2e-1-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dd2e-2-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dd2e-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dre-1-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dre-2-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD
c0-12dre-d firmwareNVD
Affected:< 3.00Fixed in:3.00CVE-2021-32984derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

1.07%probability of exploitation in 30 days
61stpercentile

Moderate risk: more likely to be exploited than 61% of all known CVEs.

References

Third-Party Advisory1

Related Vulnerabilities

Other CWE-288 vulnerabilities, ordered by exploit likelihood. View all

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CVE-2023-42793Critical9.8100%KEV + RansomFix
CVE-2024-1709Critical10.0100%KEV + RansomFix
CVE-2024-27198Critical9.8100%KEV + RansomFix
CVE-2025-4427Medium5.3100%KEVFix
CVE-2024-55591Critical9.898%KEV + RansomFix
CVE-2023-46747Critical9.897%KEV + Ransom-
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.