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CVE-2025-3091

MB connect line: Authorization bypass in mbCONNECT24/mymbCONNECT24

Published: Jun 24, 2025Updated: Jun 26, 2025 Sources: CVE List NVD BDUCWE-639
7.5HIGH
NVD MITRE
EPSS Score
0.3%
Top 74.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-639

Affected Products

MB connect line GmbH
commercialaka mb connect line
mbCONNECT24
ICS / OT / IoT
mymbCONNECT24
ICS / OT / IoT
myREX24
ICS / OT / IoT
myREX24.virtual
ICS / OT / IoT
MB connect line
commercial
mbCONNECT24
ICS / OT / IoT
mymbCONNECT24
ICS / OT / IoT
Helmholz
commercial·DE
myREX24
ICS / OT / IoT
myREX24.virtual
ICS / OT / IoT

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3091
nvd.nist.gov
https://certvde.com/en/advisories/VDE-2025-035/
certvde.com
https://certvde.com/en/advisories/VDE-2025-038/
certvde.com
and 2 more references View all →

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