# CVE-2026-10521: MB connect line mbCONNECT24 forced browsing in configuration settings

Source: https://junglewise.ai/threats/cve-2026-10521-mb-connect-line-mbconnect24-forced-browsing-in-configuration  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-23. Updated: 2026-06-23  
License: CC BY 4.0 with a link back

CVE-2026-10521 · Severity: high · CVSS 7.2 · Published 2026-06-23

MB connect line mbCONNECT24 and mymbCONNECT24, platforms used for remote maintenance and industrial data communication, contain a security flaw that allows high-privileged users to access restricted settings. An attacker with administrative credentials can bypass intended interface restrictions to modify critical system parameters. This could lead to a complete loss of control over the device, potentially disrupting industrial operations or exposing sensitive configuration 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-2026-10521 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-10521 being exploited in the wild.

**How severe is CVE-2026-10521?** High severity, with a CVSS score of 7.2, published 23 June 2026.

**Which products and versions are affected?** MB connect line mbCONNECT24 < 2.20.2; MB connect line mymbCONNECT24 < 2.20.2.

**Is there a fix for CVE-2026-10521?** 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-2026-10521 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-10521?** 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 forced browsing vulnerability (CWE-425) exists in MB connect line mbCONNECT24 and mymbCONNECT24 versions prior to 2.20.2. The flaw allows a remote attacker with high privileges to access a hidden configuration method that is not intended to be accessible by any user role. By directly requesting specific URLs or methods, the attacker can modify critical program parameters. Successful exploitation can result in a total compromise of the system's confidentiality, integrity, and availability. The issue is resolved in firmware version 2.20.2.

## Affected products

- MB connect line mbCONNECT24 < 2.20.2
- MB connect line mymbCONNECT24 < 2.20.2

## Timeline

- 2026-06-23: disclosed
- 2026-06-23: advisory

## References

- [https://www.certvde.com/en/advisories/VDE-2026-068/](https://www.certvde.com/en/advisories/VDE-2026-068/)

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- [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 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)
- [MB connect line mbCONNECT24 SQL injection in system_tag view](https://junglewise.ai/threats/cve-2026-40847-mb-connect-line-mbconnect24-sql-injection-in-system-tag-view)