High severity · published Jun 24, 2025
CVE-2025-3092
MB connect line: Observable response discrepancy in mbCONNECT24/mymbCONNECT24
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
An unauthenticated remote attacker can enumerate valid user names from an unprotected endpoint.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MB
mbCONNECT24 · MB connect line
before 2.16.5 · source: vendor
MY
myREX24 · Helmholz
before 2.18.0; before 2.16.5 · source: vendor
MY
myREX24.virtual · Helmholz
before 2.18.0; before 2.16.5 · source: vendor
MY
mymbCONNECT24 · MB connect line
before 2.18.0; before 2.18.0; before 2.16.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-3092
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-3092
certvde.com
https://certvde.com/en/advisories/VDE-2025-035
certvde.com
https://certvde.com/en/advisories/VDE-2025-038
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