Siemens Mendix Studio Pro up to 11.12.6 MCP Server access control

Summaryinfo

A vulnerability classified as critical has been found in Siemens Mendix Studio Pro up to 11.12.6. This issue affects some unknown processing of the component MCP Server. Performing a manipulation results in access control. This vulnerability is known as CVE-2026-112136. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Siemens Mendix Studio Pro up to 11.12.6. It has been classified as critical. This affects some unknown processing of the component MCP Server. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in Mendix Studio Pro 11 (All versions >= V11.15.0 < V11.16.0), Mendix Studio Pro 11.12 (All versions >= V11.12.6 < V11.12.7). The affected products MCP Server does not properly restrict its HTTP listener to the loopback interface, leaving it potentially exposed to remote systems. This could allow an attacker with network access to interact with the MCP Server remotely.

It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2026-112136 since 10/19/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/10/2026). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Siemens

Name

• Mendix Studio Pro

Version

• 11.12.0
• 11.12.1
• 11.12.2
• 11.12.3
• 11.12.4
• 11.12.5
• 11.12.6

License

• commercial

Website

• Vendor: https://www.siemens.com/

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