High severity · published Sep 23, 2025
CVE-2025-55069
AutomationDirect CLICK PLUS Predictable Seed in Pseudo-Random Number Generator
8.3
CVSS
0.3%
EPSS
No
On KEV
Description
A predictable seed in pseudo-random number generator vulnerability has been discovered in firmware version 3.60 of the Click Plus PLC. The vulnerability relies on the fact that the software implements a predictable seed for its pseudo-random number generator, which compromises the security of the generated private keys.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CP
CLICK PLUS C0-0x CPU firmware · AutomationDirect
before v3.71 · source: vendor
CP
CLICK PLUS C0-1x CPU firmware · AutomationDirect
before v3.71 · source: vendor
CP
CLICK PLUS C2-x CPU firmware · AutomationDirect
before v3.71 · source: vendor
Affected product
CP
CLICK PLUS C0-0x CPU firmware
AutomationDirect
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55069
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-55069
www.automationdirect.com
https://www.automationdirect.com/support/software-downloads
www.cisa.gov
https://www.cisa.gov/news-events/ics-advisories/icsa-25-266-01
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