AutomationDirect CLICK PLUS C0-0x CPU up to 3.70 risky encryption

Summaryinfo

A vulnerability was found in AutomationDirect CLICK PLUS C0-0x CPU, CLICK PLUS C0-1x CPU and CLICK PLUS C2-x CPU up to 3.70. It has been classified as problematic. This issue affects some unknown processing. Performing a manipulation results in risky encryption. This vulnerability is cataloged as CVE-2025-59484. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

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. This affects an unknown code block. The manipulation with an unknown input leads to a risky encryption vulnerability. CWE is classifying the issue as CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. This is going to have an impact on confidentiality. The summary by CVE is:

The use of a broken or risky cryptographic algorithm was discovered in firmware version 3.60 of the Click Plus PLC. The vulnerability relies on the fact that the software uses an insecure implementation of the RSA encryption algorithm.

The weakness was shared by Luca Borzacchiello and Diego Zaffaroni as icsa-25-266-01. It is possible to read the advisory at cisa.gov. This vulnerability is uniquely identified as CVE-2025-59484 since 09/16/2025. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

Upgrading to version 3.71 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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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