CVE-2025-3091

MB connect line: Authorization bypass in mbCONNECT24/mymbCONNECT24

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.11%
Affected: MB connect line mbCONNECT24
Affected: MB connect line mymbCONNECT24
Affected: MB connect line mymbCONNECT24
Affected: MB connect line mymbCONNECT24
Affected: Helmholz myREX24
Affected: Helmholz myREX24
Affected: Helmholz myREX24.virtual
Affected: Helmholz myREX24.virtual
Published at:
Updated at:

References

Link Tags
https://certvde.com/en/advisories/VDE-2025-035
https://certvde.com/en/advisories/VDE-2025-038

Frequently Asked Questions

What is the severity of CVE-2025-3091?
CVE-2025-3091 has been scored as a high severity vulnerability.
How to fix CVE-2025-3091?
To fix CVE-2025-3091, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-3091 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-3091 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-3091?
CVE-2025-3091 affects MB connect line mbCONNECT24, MB connect line mymbCONNECT24, MB connect line mymbCONNECT24, MB connect line mymbCONNECT24, Helmholz myREX24, Helmholz myREX24, Helmholz myREX24.virtual, Helmholz myREX24.virtual.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.