CVE-2021-32982Network attack vector

Password disclosure via plaintext project-transfer exchange

Published Apr 4, 2022 · Updated Apr 16, 2025

Cleartext credential transmission in AutomationDirect CLICK PLC firmware before 3.00 allows attackers to capture PLC passwords over a network. The unlock and project-transfer exchanges send the configured password without encryption, exposing it to traffic observers. The attacker must have network visibility between the programming software and PLC; the captured password can enable later authenticated access.

CVSS severity7.5
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential transmission in AutomationDirect CLICK PLC firmware before 3.00 allows attackers to capture PLC passwords over a network. The unlock and project-transfer exchanges send the configured password without encryption, exposing it to traffic observers. The attacker must have network visibility between the programming software and PLC; the captured password can enable later authenticated access.

The record

CVE
CVE-2021-32982
Published
Apr 4, 2022
Updated
Apr 16, 2025
Vendor
AutomationDirect
Product
CLICK PLC
Classifications
CWE-319, T0842
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <3.00

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AutomationDirect · CLICK PLCversion=unspecified <3.00

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T0842Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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