CVE-2025-3091— MB connect line: Authorization bypass in mbCONNECT24/mymbCONNECT24
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
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 |
|---|
AI-Generated POCPremium
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IV. Related Vulnerabilities
Same product: mbCONNECT24
- CVE-2026-33617
MB connect line mbCONNECT24 vulnerable to an unauthenticated - CVE-2026-33616
MB connect line mbCONNECT24 vulnerable to an unauthenticated - CVE-2026-33615
MB connect line mbCONNECT24 vulnerable to an unauthenticated - CVE-2026-33614
MB connect line mbCONNECT24 vulnerable to an unauthenticated - CVE-2026-33613
MB connect line mbCONNECT24 vulnerable to RCE in generateSrp
Same vendor: MB connect line
- CVE-2026-33617
MB connect line mbCONNECT24 vulnerable to an unauthenticated - CVE-2026-33616
MB connect line mbCONNECT24 vulnerable to an unauthenticated - CVE-2026-33615
MB connect line mbCONNECT24 vulnerable to an unauthenticated - CVE-2026-33614
MB connect line mbCONNECT24 vulnerable to an unauthenticated - CVE-2026-33613
MB connect line mbCONNECT24 vulnerable to RCE in generateSrp
Same weakness: CWE-639
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MailEnable Enterprise Premium < 10.55 Authorization Bypass v - CVE-2026-42279
solidtime: Time entry update endpoint allows cross-organizat - CVE-2026-42277
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V. Comments for CVE-2025-3091
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