# CVE-2026-40843: MB connect line mbCONNECT24 SQL injection in alarming view

Source: https://junglewise.ai/threats/cve-2026-40843-mb-connect-line-mbconnect24-sql-injection-in-alarming-view  
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-2026-40843 · Severity: medium · CVSS 6.5 · Published 2026-05-27

MB connect line industrial remote access platforms are affected by a security flaw in the alarming view component. A remote attacker with low-level user permissions can exploit this to gain unauthorized access to the underlying database. This could lead to the exposure of sensitive system information and a total loss of data confidentiality.

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-2026-40843 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40843 being exploited in the wild.

**How severe is CVE-2026-40843?** Medium severity, with a CVSS score of 6.5, 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-2026-40843?** 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-2026-40843 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-40843?** 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 alarming view component of mbCONNECT24 and mymbCONNECT24 firmware versions 2.20.0 and earlier. The flaw is caused by improper neutralization of special elements within a SQL SELECT command. A remote attacker with low-privileged credentials can inject malicious SQL queries over the network without user interaction. Successful exploitation allows the attacker to read sensitive information from the database, resulting in a total loss of confidentiality. The vulnerability is tracked as CVE-2026-40843 and was disclosed by CERT VDE.

## Affected products

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

## Timeline

- 2026-05-27: disclosed: Initial advisory published by CERT VDE
- 2026-05-27: advisory: NVD record published

## References

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

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