CVE-2025-3091— MB connect line: Authorization bypass in mbCONNECT24/mymbCONNECT24
Quick assessment
Affected
MB connect line mbCONNECT24
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.
MB Connect Line mbCONNECT24等都是德国MB Connect Line公司的产品。MB Connect Line mbCONNECT24是一套远程服务门户网站。MB Connect Line mymbCONNECT24是一款适用于虚拟环境的内部远程维护解决方案。Helmholz myREX24等都是Helmholz公司的产品。Helmholz myREX24是一个集成系统，用于访问机器或系统的组件，以进行远程维护和远程诊断。 Helmholz myREX24、MB Connect
Possible ATT&CK Techniques 1 AI
T1078 · Valid Accounts
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I. Basic Information for CVE-2025-3091
Vulnerability Information
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Vulnerability Title
MB connect line: Authorization bypass in mbCONNECT24/mymbCONNECT24
Source: CVE Program / CVE List V5
Vulnerability Description
An low privileged remote attacker in possession of the second factor for another user can login as that user without knowledge of the other user`s password.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Helmholz myREX24、MB Connect Line mymbCONNECT24和MB Connect Line mbCONNECT24 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MB Connect Line mbCONNECT24等都是德国MB Connect Line公司的产品。MB Connect Line mbCONNECT24是一套远程服务门户网站。MB Connect Line mymbCONNECT24是一款适用于虚拟环境的内部远程维护解决方案。Helmholz myREX24等都是Helmholz公司的产品。Helmholz myREX24是一个集成系统，用于访问机器或系统的组件，以进行远程维护和远程诊断。 Helmholz myREX24、MB Connect
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 |
|---|---|---|---|---|
| MB connect line | mbCONNECT24 | 0 ~ 2.16.5 | - |
|
| MB connect line | mymbCONNECT24 | 0 ~ 2.18.0 | - |
|
| MB connect line | mymbCONNECT24 | 0 ~ 2.18.0 | - |
|
| MB connect line | mymbCONNECT24 | 0 ~ 2.16.5 | - |
|
| Helmholz | myREX24 | 0 ~ 2.18.0 | - |
|
| Helmholz | myREX24 | 0 ~ 2.16.5 | - |
|
| Helmholz | myREX24.virtual | 0 ~ 2.18.0 | - |
|
| Helmholz | myREX24.virtual | 0 ~ 2.16.5 | - |
|
II. Public POCs for CVE-2025-3091
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
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V. Comments for CVE-2025-3091
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