Summary
Multiple vulnerabilities have been discovered in MB connect line mbCONNECT24/mymbCONNECT24 that could allow RCE, SQLi or information leakage.
Impact
CVE-2026-33613 allows RCE resulting in full system compromise impacting confidentiality, integrity, and availability. CVE-2026-33614 and CVE-2026-33616 allow unauthenticated SQLi resulting in arbitrary read access to the complete database, while CVE-2026-33615 results in arbitrary write access to the user table. Lastly CVE-2026-33617 allows unauthenticated access to some sensitive data.
Affected Product(s)
| Model no. | Product name | Affected versions |
|---|---|---|
| MB connect line mbCONNECT24 | Firmware <=2.19.4, Firmware 2.19.4 | |
| mymbCONNECT24 | Firmware 2.19.4, Firmware <=2.19.4 |
Vulnerabilities
Expand / Collapse allAn unauthenticated remote attacker can exploit an unauthenticated SQL Injection vulnerability in the setinfo endpoint due to improper neutralization of special elements in a SQL UPDATE command. This can result in a total loss of integrity and availability.
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.
An unauthenticated remote attacker can exploit an unauthenticated SQL Injection vulnerability in the getinfo endpoint due to improper neutralization of special elements in a SQL SELECT command. This can result in a total loss of confidentiality.
Due to the improper neutralisation of special elements used in an OS command, a remote attacker can exploit an RCE vulnerability in the generateSrpArray function, resulting in full system compromise.
This vulnerability can only be attacked if the attacker has some other way to write arbitrary data to the user table.
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.
Remediation
Update the mbCONNECT24/mymbCONNECT24 instance to version 2.19.5.
Acknowledgments
MB connect line GmbH thanks the following parties for their efforts:
- CERT@VDE for coordination (see https://certvde.com )
- Moritz Abrell, Christian Zäske from SySS GmbH for reporting (see https://www.syss.de )
Revision History
| Version | Date | Summary |
|---|---|---|
| 1.0.0 | 04/02/2026 13:00 | Initial revision. |