AutomationDirect CLICK PLUS C0-0x CPU up to 3.70 prng seed

Summaryinfo

A vulnerability, which was classified as problematic, was found in AutomationDirect CLICK PLUS C0-0x CPU, CLICK PLUS C0-1x CPU and CLICK PLUS C2-x CPU up to 3.70. Affected by this issue is some unknown functionality. The manipulation results in prng seed. This vulnerability is identified as CVE-2025-55069. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in AutomationDirect CLICK PLUS C0-0x CPU, CLICK PLUS C0-1x CPU and CLICK PLUS C2-x CPU up to 3.70. Affected is some unknown functionality. The manipulation with an unknown input leads to a prng seed vulnerability. CWE is classifying the issue as CWE-337. A Pseudo-Random Number Generator (PRNG) is initialized from a predictable seed, such as the process ID or system time. This is going to have an impact on confidentiality. CVE summarizes:

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.

The weakness was released by Luca Borzacchiello and Diego Zaffaroni as icsa-25-266-01. The advisory is shared for download at cisa.gov. This vulnerability is traded as CVE-2025-55069 since 09/16/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.001.

Upgrading to version 3.71 eliminates this vulnerability.

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Productinfo

Type

• Chip Software

Vendor

• AutomationDirect

Name

• CLICK PLUS C0-0x CPU
• CLICK PLUS C0-1x CPU
• CLICK PLUS C2-x CPU

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29
• 3.30
• 3.31
• 3.32
• 3.33
• 3.34
• 3.35
• 3.36
• 3.37
• 3.38
• 3.39
• 3.40
• 3.41
• 3.42
• 3.43
• 3.44
• 3.45
• 3.46
• 3.47
• 3.48
• 3.49
• 3.50
• 3.51
• 3.52
• 3.53
• 3.54
• 3.55
• 3.56
• 3.57
• 3.58
• 3.59
• 3.60
• 3.61
• 3.62
• 3.63
• 3.64
• 3.65
• 3.66
• 3.67
• 3.68
• 3.69
• 3.70

CPE 2.3info

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CPE 2.2info

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