Full Report
Multiple Siemens applications are affected by improper certificate validation in Siemens Analytics Toolkit. This could allow an unauthenticated remote attacker to perform man in the middle attacks. Siemens has released new versions for the affected products and recommends to update to the latest versions.
Analysis Summary
# Vulnerability: Improper Certificate Validation in Siemens Analytics Toolkit
## CVE Details
- **CVE ID:** CVE-2025-40745
- **CVSS Score:**
- CVSS v4.0: 6.3 (Medium)
- CVSS v3.1: 3.7 (Low)
- **CWE:** CWE-295: Improper Certificate Validation
## Affected Systems
- **Products:**
- Siemens Software Center
- Simcenter 3D
- Simcenter Femap
- Simcenter STAR-CCM+
- Solid Edge SE2025
- Solid Edge SE2026
- Tecnomatix Plant Simulation
- **Versions:**
- Siemens Software Center: < V3.5.8.2
- Simcenter 3D: < V2506.6000
- Simcenter Femap: < V2506.0002
- Simcenter STAR-CCM+: < V2602
- Solid Edge SE2025: < V225.0 Update 13
- Solid Edge SE2026: < V226.0 Update 04
- Tecnomatix Plant Simulation: < V2504.0008
- **Configurations:** Systems utilizing the Siemens Analytics Toolkit to connect to the Analytics Service endpoint.
## Vulnerability Description
The affected applications fail to properly validate certificates when connecting to the Analytics Service endpoint via the Siemens Analytics Toolkit. This failure in the chain of trust allows an unauthenticated remote attacker to intercept the communication channel. By spoofing the endpoint, an attacker can perform a Man-in-the-Middle (MitM) attack to capture or potentially manipulate data in transit.
## Exploitation
- **Status:** Not exploited (No known PoC or active exploitation reported at publication).
- **Complexity:** High (Requires the attacker to be positioned in the network path between the client and the service).
- **Attack Vector:** Network
## Impact
- **Confidentiality:** Low (Potential for unauthorized viewing of transmitted data).
- **Integrity:** None (Per CVSS 3.1) / Low (Per CVSS 4.0 analysis of MitM potential).
- **Availability:** None
## Remediation
### Patches
Siemens recommends updating affected products to the following versions or later:
- **Siemens Software Center:** V3.5.8.2
- **Simcenter 3D:** V2506.6000
- **Simcenter Femap:** V2506.0002
- **Simcenter STAR-CCM+:** V2602
- **Solid Edge SE2025:** V225.0 Update 13
- **Solid Edge SE2026:** V226.0 Update 04
- **Tecnomatix Plant Simulation:** V2504.0008
### Workarounds
- Protect network access to devices using appropriate mechanisms (e.g., VPNs, VLAN segmentation).
- Follow Siemens' operational guidelines for Industrial Security to ensure the environment is hardened against interception.
## Detection
- **Indicators of Compromise:** Unusual certificate warnings (if presented by the OS) or traffic directed to unauthorized external IP addresses instead of the official Siemens Analytics Service endpoint.
- **Detection methods and tools:** Network monitoring for unauthorized Man-in-the-Middle proxies or interception tools within the industrial network.
## References
- **Vendor Advisory:** [SSA-981622]
- **Siemens ProductCERT:** hxxps[://]cert-portal[.]siemens[.]com/productcert/html/ssa-981622[.]html
- **Industrial Security Guidelines:** hxxps[://]www[.]siemens[.]com/cert/operational-guidelines-industrial-security