Medium severity · published Apr 2, 2026
CVE-2026-33617
MB connect line mbCONNECT24 vulnerable to an unauthenticated information disclosure in the data24 Endpoint
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
An unauthenticated remote attacker can access a configuration file containing database credentials. This can result in a some loss of confidentiality, but there is no endpoint exposed to use these credentials.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MB
mbCONNECT24 · MB connect line
0.0.0 through 2.19.4 · source: vendor, NVD
MY
mymbCONNECT24 · MB connect line
0.0.0 through 2.19.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33617
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33617
Third Party Advisory
https://certvde.com/de/advisories/VDE-2026-030
Vendor Advisory
https://mbconnectline.csaf-tp.certvde.com/.well-known/csaf/white/2026/vde-2026-030.json
More from mbCONNECT24
9.1
CVE-2026-33615
MB connect line mbCONNECT24 vulnerable to an unauthenticated SQL injection in the setinfo Endpoint
9.1
CVE-2024-23943
MB connect line: Cloud API access due to a lack of authentication for a critical function
8.8
CVE-2026-33613
MB connect line mbCONNECT24 vulnerable to RCE in generateSrpArray
8.2
CVE-2025-3090
MB connect line: Missing Authentication in mbCONNECT24/mymbCONNECT24
7.5
CVE-2026-40850
Unauthenticated SQLi in getAccountData function