# CVE-2026-40836: MB connect line mbCONNECT24 SQL injection in inmessage model

Source: https://junglewise.ai/threats/cve-2026-40836-mb-connect-line-mbconnect24-sql-injection-in-inmessage-model  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-27. Updated: 2026-05-27  
License: CC BY 4.0 with a link back

CVE-2026-40836 · Severity: high · CVSS 7.1 · Published 2026-05-27

MB connect line's remote access platforms, used for industrial communication and IoT management, contain a security flaw in their messaging component. A remote attacker with low-level access can exploit this to read the entire system database or delete certain records. This could lead to the exposure of sensitive configuration data and a partial loss of system integrity.

Technologies: [MB connect line mbCONNECT24](https://junglewise.ai/threats/technologies/mbconnect24), [MB connect line mymbCONNECT24](https://junglewise.ai/threats/technologies/mymbconnect24). Vendors: [MB connect line](https://junglewise.ai/threats/vendors/mb-connect-line).

## Quick answers

**Is CVE-2026-40836 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40836 being exploited in the wild.

**How severe is CVE-2026-40836?** High severity, with a CVSS score of 7.1, published 27 May 2026.

**Which products and versions are affected?** MB connect line mbCONNECT24 <= 2.20.0; MB connect line mymbCONNECT24 <= 2.20.0.

**Is there a fix for CVE-2026-40836?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-40836 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-40836?** Check whether you run MB connect line mbCONNECT24 or MB connect line mymbCONNECT24 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A SQL injection vulnerability exists in the 'inmessage' model of MB connect line mbCONNECT24 and mymbCONNECT24 firmware versions up to and including 2.20.0. The flaw is caused by improper neutralization of special elements within a SQL DELETE command. A remote attacker with low privileges can exploit this vulnerability over the network without user interaction. Successful exploitation allows the attacker to perform unauthorized database queries to read all table data and delete entries within non-critical tables, resulting in a total loss of confidentiality and partial loss of integrity. Users are advised to update to a patched version if available.

## Affected products

- MB connect line mbCONNECT24 <= 2.20.0
- MB connect line mymbCONNECT24 <= 2.20.0

## Timeline

- 2026-05-27: advisory: VDE-2026-044 published by CERT VDE
- 2026-05-27: disclosed: CVE-2026-40836 published to NVD

## References

- [https://www.certvde.com/en/advisories/VDE-2026-044/](https://www.certvde.com/en/advisories/VDE-2026-044/)

## Related threats

- [MB connect line mbCONNECT24 SQL injection in getVpnData](https://junglewise.ai/threats/cve-2026-40820-a-high-privileged-remote-attacker-can-exploit-an-unauthenticated)
- [MB connect line and Helmholz OS command injection in system_certificates view](https://junglewise.ai/threats/cve-2026-14448-mb-connect-line-and-helmholz-os-command-injection-in-system)
- [MB connect line mbCONNECT24 forced browsing in configuration settings](https://junglewise.ai/threats/cve-2026-10521-mb-connect-line-mbconnect24-forced-browsing-in-configuration)
- [MB connect line mbCONNECT24 SQL injection in user_alarmprofile view](https://junglewise.ai/threats/cve-2026-40849-mb-connect-line-mbconnect24-sql-injection-in-user-alarmprofile)
- [MB connect line mbCONNECT24 SQL injection in tag view](https://junglewise.ai/threats/cve-2026-40848-mb-connect-line-mbconnect24-sql-injection-in-tag-view)