CVE-2026-33616: MB connect line mbCONNECT24 vulnerable to an unauthenticated SQL injection in the mb24api Endpoint

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-02 · updated 2026-10-25
Weakness: CWE-89

Description

An unauthenticated remote attacker can exploit an unauthenticated blind SQL Injection vulnerability in the mb24api endpoint due to improper neutralization of special elements in a SQL SELECT command. This can result in a total loss of confidentiality.

Affected products

MB connect line mbCONNECT24: through 2.19.4
MB connect line mymbCONNECT24: through 2.19.4

References

https://certvde.com/de/advisories/VDE-2026-030
https://mbconnectline.csaf-tp.certvde.com/.well-known/csaf/white/2026/vde-2026-030.json

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