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CVE-2025-55038— AutomationDirect CLICK PLUS Missing Authorization

Quick assessment

Affected
AutomationDirect CLICK PLUS C0-0x CPU firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AutomationDirect CLICK PLUS是美国AutomationDirect公司的一款小型可编程逻辑控制器。 AutomationDirect CLICK PLUS 3.60版本存在安全漏洞，该漏洞源于KOPR协议授权不当，可能导致低权限用户越权读取和修改PLC变量。

CVSS 6.8 · Medium EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1078.003 · Local Accounts
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I. Basic Information for CVE-2025-55038

Vulnerability Information
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Vulnerability Title
AutomationDirect CLICK PLUS Missing Authorization
Source: CVE Program / CVE List V5
Vulnerability Description
An authorization bypass vulnerability has been discovered in the Click Plus C2-03CPU2 device firmware version 3.60. Through the KOPR protocol utilized by the Remote PLC application, authenticated users with low-level access permissions can exploit this vulnerability to read and modify PLC variables beyond their intended authorization level.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
AutomationDirect CLICK PLUS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AutomationDirect CLICK PLUS是美国AutomationDirect公司的一款小型可编程逻辑控制器。 AutomationDirect CLICK PLUS 3.60版本存在安全漏洞，该漏洞源于KOPR协议授权不当，可能导致低权限用户越权读取和修改PLC变量。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AutomationDirect CLICK PLUS C0-0x CPU firmware 0 ~ v3.71 -
AutomationDirect CLICK PLUS C0-1x CPU firmware 0 ~ v3.71 -
AutomationDirect CLICK PLUS C2-x CPU firmware 0 ~ v3.71 -

II. Public POCs for CVE-2025-55038

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III. Intelligence Information for CVE-2025-55038

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Same Patch Batch · AutomationDirect · 2025-09-23 · 7 CVEs total

CVE-2025-55069 8.3 HIGH AutomationDirect CLICK PLUS Predictable Seed in Pseudo-Random Number Generator
CVE-2025-59484 8.3 HIGH AutomationDirect CLICK PLUS Use of a Broken or Risky Cryptographic Algorithm
CVE-2025-58473 5.9 MEDIUM AutomationDirect CLICK PLUS Improper Resource Shutdown or Release
CVE-2025-57882 5.9 MEDIUM AutomationDirect CLICK PLUS Improper Resource Shutdown or Release
CVE-2025-58069 5.3 MEDIUM AutomationDirect CLICK PLUS Use of Hard-coded Cryptographic Key
CVE-2025-54855 4.2 MEDIUM AutomationDirect CLICK PLUS Cleartext Storage of Sensitive Information

IV. Related Vulnerabilities

Same product: CLICK PLUS C0-0x CPU firmware
Same vendor: AutomationDirect
Same weakness: CWE-862

V. Comments for CVE-2025-55038

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