# Siemens Analytics Toolkit Vulnerable to Man-in-the-Middle Attacks Across Multiple Products


## The Threat


Siemens has disclosed a critical vulnerability affecting seven products within its Analytics Toolkit suite that could allow unauthenticated remote attackers to intercept and manipulate communications with vulnerable systems. The flaw stems from improper certificate validation in the toolkit's components, specifically in how they validate client certificates when connecting to the Analytics Service endpoint. This weakness creates a significant attack surface for adversaries seeking to perform man-in-the-middle (MITM) attacks against organizations relying on Siemens' engineering and manufacturing software.


The vulnerability affects a broad ecosystem of Siemens products commonly used in critical manufacturing environments worldwide, including design, simulation, and plant optimization tools. Organizations in the manufacturing, aerospace, automotive, and energy sectors that rely on these applications for product development and production planning are particularly at risk. An attacker positioned on the network between a client and the Analytics Service could exploit this flaw without requiring authentication, making it a practical concern for any organization with inadequate network segmentation.


While the CVSS score of 3.7 is classified as LOW severity, this rating should not be taken as a signal to deprioritize patching. The low score reflects mitigating factors such as high attack complexity, but the practical impact of a successful MITM attack—data interception, process manipulation, or system compromise—could be substantial in manufacturing environments where data integrity is critical.


## Severity and Impact


| Attribute | Details |

|---|---|

| CVE Identifier | CVE-2025-40745 |

| CVSS v3.1 Base Score | 3.7 (LOW) |

| CVSS Vector String | AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |

| Attack Vector | Network |

| Attack Complexity | High |

| Privileges Required | None |

| User Interaction | None |

| Scope | Unchanged |

| Confidentiality Impact | Low |

| Integrity Impact | None |

| Availability Impact | None |

| CWE Classification | CWE-295 (Improper Certificate Validation) |

| Affected Critical Infrastructure | Critical Manufacturing (Worldwide Deployment) |

| Vendor | Siemens AG (Germany) |


## Affected Products


The vulnerability impacts the following Siemens applications and versions:


Siemens Software Center

  • Versions before 3.5.8.2

    • Simcenter 3D

  • Versions before 2506.6000

    • Simcenter Femap

  • Versions before 2506.0002

    • Simcenter STAR-CCM+

  • Versions before 2602

    • Solid Edge CAD Suite

  • SE2025
  • SE2026

    • Tecnomatix Plant Simulation

  • Versions before 2504.0008

    • These products collectively serve product development, digital manufacturing, and engineering simulation workflows across Fortune 500 manufacturers and tier-one suppliers worldwide.


    ## Mitigations


    Immediate Actions:


    Organizations should prioritize updating affected installations to patched versions as soon as testing and validation timelines allow:


  • Siemens Software Center: Update to version 3.5.8.2 or later ([Support Page](https://www.sw.siemens.com/en-US/siemens-software-center/))
  • Simcenter 3D: Update to version 2506.6000 or later ([Support Page](https://support.sw.siemens.com/product/289054037/))
  • Simcenter Femap: Update to version 2506.0002 or later ([Support Page](https://support.sw.siemens.com/product/275652363/))
  • Simcenter STAR-CCM+: Update to version 2602 or later ([Support Page](https://support.sw.siemens.com/product/226870983/))
  • Solid Edge SE2025/SE2026: Update to version 225.0 Update 13 or version 226.0 Update 04, or later ([Support Page](https://support.sw.siemens.com/product/246738425/))
  • Tecnomatix Plant Simulation: Update to version 2504.0008 or later ([Support Page](https://support.sw.siemens.com/product/297028302/))

    • Network-Level Protections:


    While patches are deployed, implement additional defensive measures:


  • Segment Analytics Service endpoints behind corporate firewalls and restrict access to authorized subnets only
  • Isolate engineering networks from general business networks to limit MITM attack opportunities
  • Monitor network traffic for suspicious certificate validation failures or unexpected connections to Analytics Service endpoints
  • Enforce VPN or zero-trust access for remote connections to these systems
  • Implement certificate pinning on client applications where possible to validate Analytics Service endpoints

    • Operational Guidance:


    Siemens recommends organizations follow its operational guidelines for Industrial Security, available at [https://www.siemens.com/cert/operational-guidelines-industrial-security](https://www.siemens.com/cert/operational-guidelines-industrial-security). This includes:


  • Protecting network access to all Siemens devices with appropriate authentication and encryption mechanisms
  • Limiting direct internet exposure of engineering and manufacturing systems
  • Implementing intrusion detection on critical manufacturing networks
  • Maintaining an inventory of all Analytics Toolkit deployments for rapid patch assessment

    • ## References


  • Siemens ProductCERT Advisory: [https://www.siemens.com/cert/advisories](https://www.siemens.com/cert/advisories)
  • CISA Notification: [https://www.cisa.gov/notification](https://www.cisa.gov/notification)
  • Siemens Industrial Security: [https://www.siemens.com/industrialsecurity](https://www.siemens.com/industrialsecurity)
  • Siemens ProductCERT Contact: [https://www.siemens.com/cert](https://www.siemens.com/cert)

    • ---


    *Organizations deploying Siemens Analytics Toolkit products should treat this advisory as a high-priority patch management task despite the LOW CVSS rating. The potential for network-level compromise in manufacturing environments warrants swift testing and deployment of available fixes. Verify patch status across all affected applications and prioritize environments with cloud connectivity or remote access capabilities.*