CVE-2025-3091

MB connect line: Authorization bypass in mbCONNECT24/mymbCONNECT24

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

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.

*Credits: Peter Husted Simonsen, Irwin Przeperski, Eviden

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2025-04-01 CVE Reserved
2025-06-24 CVE Published
2025-06-24 CVE Updated
2025-06-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-639: Authorization Bypass Through User-Controlled Key

CAPEC

References (2)

URL	Tag	Source
https://certvde.com/en/advisories/VDE-2025-035
https://certvde.com/en/advisories/VDE-2025-038

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
MB Connect Line Search vendor "MB Connect Line"		MbCONNECT24 Search vendor "MB Connect Line" for product "MbCONNECT24"				< 2.16.5 Search vendor "MB Connect Line" for product "MbCONNECT24" and version " < 2.16.5"		en		Affected
MB Connect Line Search vendor "MB Connect Line"		MymbCONNECT24 Search vendor "MB Connect Line" for product "MymbCONNECT24"				< 2.18.0 Search vendor "MB Connect Line" for product "MymbCONNECT24" and version " < 2.18.0"		en		Affected
MB Connect Line Search vendor "MB Connect Line"		MymbCONNECT24 Search vendor "MB Connect Line" for product "MymbCONNECT24"				< 2.18.0 Search vendor "MB Connect Line" for product "MymbCONNECT24" and version " < 2.18.0"		en		Affected
MB Connect Line Search vendor "MB Connect Line"		MymbCONNECT24 Search vendor "MB Connect Line" for product "MymbCONNECT24"				< 2.16.5 Search vendor "MB Connect Line" for product "MymbCONNECT24" and version " < 2.16.5"		en		Affected
Helmholz Search vendor "Helmholz"		MyREX24 Search vendor "Helmholz" for product "MyREX24"				< 2.18.0 Search vendor "Helmholz" for product "MyREX24" and version " < 2.18.0"		en		Affected
Helmholz Search vendor "Helmholz"		MyREX24 Search vendor "Helmholz" for product "MyREX24"				< 2.16.5 Search vendor "Helmholz" for product "MyREX24" and version " < 2.16.5"		en		Affected
Helmholz Search vendor "Helmholz"		MyREX24.virtual Search vendor "Helmholz" for product "MyREX24.virtual"				< 2.18.0 Search vendor "Helmholz" for product "MyREX24.virtual" and version " < 2.18.0"		en		Affected
Helmholz Search vendor "Helmholz"		MyREX24.virtual Search vendor "Helmholz" for product "MyREX24.virtual"				< 2.16.5 Search vendor "Helmholz" for product "MyREX24.virtual" and version " < 2.16.5"		en		Affected