# CVE-2026-40834: MB connect line mbCONNECT24 SQL injection in saveDashboardLayout

Source: https://junglewise.ai/threats/cve-2026-40834-mb-connect-line-mbconnect24-sql-injection-in-savedashboardlayout  
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-2026-40834 · Severity: high · CVSS 7.1 · Published 2026-05-27

MB connect line industrial communication platforms are affected by a security vulnerability in the dashboard layout management component. A remote user with low-level access can exploit this flaw to read sensitive information from the entire database or insert unauthorized data into certain tables. This could lead to a significant breach of confidential business or operational data and minor disruptions to 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-2026-40834 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40834 being exploited in the wild.

**How severe is CVE-2026-40834?** 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-2026-40834?** 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-2026-40834 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-40834?** 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 MB connect line mbCONNECT24 and mymbCONNECT24 platforms within the 'saveDashboardLayout' function of the 'dash_layout.php' file. The issue stems from improper neutralization of special elements used in a SQL INSERT command. A remote attacker with low-privileged credentials can leverage this flaw via the network to execute arbitrary SQL queries. Successful exploitation allows the attacker to extract the full contents of the database (total loss of confidentiality) and modify or insert data into non-critical tables (partial loss of integrity). The vulnerability is present in firmware versions up to and including 2.20.0.

## Affected products

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

## Timeline

- 2026-05-27: disclosed
- 2026-05-27: advisory

## References

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

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