Critical severity · published Apr 4, 2022
CVE-2021-32980
Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel
9.8
CVSS
1.1%
EPSS
No
On KEV
Description
Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 does not protect against additional software programming connections. An attacker can connect to the PLC while an existing connection is already active.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CP
CLICK PLC CPU Modules: C0-1x CPUs · Automation Direct
before 3.00 · source: vendor
CF
C0-10are-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-10dd1e-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-10dd2e-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-10dre-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-11are-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-11dd1e-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-11dd2e-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-11dre-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-12are-1-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-12are-2-d Firmware · Automationdirect
before 3.00 · source: NVD
CF
C0-12are-d Firmware · Automationdirect
before 3.00 · source: NVD
Affected product
CP
CLICK PLC CPU Modules: C0-1x CPUs
Automation Direct
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-32980
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-32980
Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02
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