# CVE-2026-40829: MB connect line mbCONNECT24 SQL injection in UpdateParam

Source: https://junglewise.ai/threats/cve-2026-40829-mb-connect-line-mbconnect24-sql-injection-in-updateparam  
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-2026-40829 · Severity: medium · CVSS 5.5 · Published 2026-05-27

MB connect line mbCONNECT24 and mymbCONNECT24 are remote service platforms used for industrial communication and remote maintenance. A security vulnerability in these platforms allows a high-privileged user to perform unauthorized database operations. This could lead to the exposure of sensitive information across the entire database and the modification of certain non-critical data.

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-2026-40829 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40829 being exploited in the wild.

**How severe is CVE-2026-40829?** Medium severity, with a CVSS score of 5.5, 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-2026-40829?** 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-2026-40829 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-40829?** 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 UpdateParam function within the view.html.php file of MB connect line mbCONNECT24 and mymbCONNECT24 (firmware versions <= 2.20.0). The flaw stems from improper neutralization of special elements in a SQL UPDATE command. A remote attacker with high privileges can exploit this over the network to execute arbitrary SQL queries. Successful exploitation allows the attacker to read the entire database (total loss of confidentiality) and modify values in non-critical tables (partial loss of integrity). The vulnerability is tracked as CVE-2026-40829 and was disclosed alongside several other SQL injection flaws in the same product suite.

## Affected products

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

## Timeline

- 2026-05-27: disclosed: Initial advisory publication 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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- [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)
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