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CVE-2025-3091

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductmbCONNECT24
PublishedJun 24, 2025
First seenJun 24, 2025
Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update
  • MB connect line mbCONNECT242.16.5 or later
  • MB connect line mymbCONNECT242.18.0, 2.16.5 or later
  • Helmholz myREX242.18.0, 2.16.5 or later
  • Helmholz myREX24.virtual2.18.0, 2.16.5 or later

Affected products

ProductAffected versionsFixed in
MB connect line mbCONNECT24v < 2.16.52.16.5
MB connect line mymbCONNECT24v < 2.18.0, v < 2.16.52.18.0, 2.16.5
Helmholz myREX24v < 2.18.0, v < 2.16.52.18.0, 2.16.5
Helmholz myREX24.virtualv < 2.18.0, v < 2.16.52.18.0, 2.16.5

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