High severity · published Apr 4, 2022
CVE-2021-32978
Automation Direct CLICK PLC CPU Modules Plaintext Storage of a Password
7.5
CVSS
1%
EPSS
No
On KEV
Description
The programming protocol allows for a previously entered password and lock state to be read by an attacker. If the previously entered password was successful, the attacker can then use the password to unlock Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% 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-2021-32978
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-32978
Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02
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