CVE-2025-3091: high-severity vulnerability in mbCONNECT24
MB connect line: Authorization bypass in mbCONNECT24/mymbCONNECT24
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.4%
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Helmholz · myREX24Helmholz · myREX24.virtualMB connect line · mbCONNECT24MB connect line · mymbCONNECT24Related CVEs — mbCONNECT24
In the same product, most dangerous first.
CVE-2021-34580HIGHRemote user enumeration in mymbCONNECT24, mbCONNECT24 <= 2.9.0EPSS 1.0%CVE-2020-12527MEDIUMImproper Access Validation in products of MB connect line and HelmholzEPSS 1.0%CVE-2022-22520MEDIUMUser enumeration vulnerability in MB connect line and Helmholz productsEPSS 1.0%CVE-2021-34575HIGHInformation Exposure in mymbCONNECT24, mbCONNECT24 <= 2.8.0EPSS 1.0%CVE-2026-14448HIGHAuthenticated RCE in system_certificates viewEPSS 0.9%CVE-2020-12528MEDIUMCVE-2020-12528EPSS 0.9%