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CVE-2025-36535— AutomationDirect MB-Gateway Missing Authentication for Critical Function

Quick assessment

Affected
AutomationDirect MB-Gateway
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 MB-Gateway是美国AutomationDirect公司的一款单端口 Modbus 网关模块，可将 Modbus TCP 转换为 Modbus RTU。 AutomationDirect MB-Gateway存在访问控制错误漏洞，该漏洞源于嵌入式Web服务器缺乏身份验证和访问控制，可能导致配置更改或任意代码执行。

CVSS 10.0 · Critical EPSS 1.04% · P63
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I. Basic Information for CVE-2025-36535

Vulnerability Information
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Vulnerability Title
AutomationDirect MB-Gateway Missing Authentication for Critical Function
Source: CVE Program / CVE List V5
Vulnerability Description
The embedded web server lacks authentication and access controls, allowing unrestricted remote access. This could lead to configuration changes, operational disruption, or arbitrary code execution depending on the environment and exposed functionality.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
AutomationDirect MB-Gateway 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AutomationDirect MB-Gateway是美国AutomationDirect公司的一款单端口 Modbus 网关模块，可将 Modbus TCP 转换为 Modbus RTU。 AutomationDirect MB-Gateway存在访问控制错误漏洞，该漏洞源于嵌入式Web服务器缺乏身份验证和访问控制，可能导致配置更改或任意代码执行。
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)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
AutomationDirect MB-Gateway All -

II. Public POCs for CVE-2025-36535

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III. Intelligence Information for CVE-2025-36535

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Vendor Advisories for CVE-2025-36535 (1)

IV. Related Vulnerabilities

Same vendor: AutomationDirect
Same weakness: CWE-306

V. Comments for CVE-2025-36535

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