CVE-2025-23399 Overview
CVE-2025-23399 is an out-of-bounds read vulnerability [CWE-125] affecting Siemens Teamcenter Visualization and Tecnomatix Plant Simulation. The flaw resides in the WRL (VRML) file parser, which reads past the end of an allocated structure when processing specially crafted input files. An attacker who convinces a user to open a malicious WRL file can trigger memory disclosure or arbitrary code execution in the context of the current process. Siemens published advisory SSA-050438 on March 11, 2025, covering multiple product branches and providing fixed versions.
Critical Impact
Successful exploitation allows attackers to execute code in the context of the current user, potentially compromising sensitive engineering and manufacturing design data.
Affected Products
- Teamcenter Visualization V14.3 (versions prior to V14.3.0.13) and V2312 (versions prior to V2312.0009)
- Teamcenter Visualization V2406 (versions prior to V2406.0007) and V2412 (versions prior to V2412.0002)
- Tecnomatix Plant Simulation V2302 (versions prior to V2302.0021) and V2404 (versions prior to V2404.0010)
Discovery Timeline
- 2025-03-11 - Siemens publishes security advisory SSA-050438 with fixed versions
- 2025-03-11 - CVE-2025-23399 published to NVD
- 2025-09-23 - Last updated in NVD database
Technical Details for CVE-2025-23399
Vulnerability Analysis
The vulnerability is an out-of-bounds read [CWE-125] in the WRL file parser shared by Siemens Teamcenter Visualization and Tecnomatix Plant Simulation. WRL files are text-based VRML scene-description files that contain nodes, fields, and indexed geometry data. The parser allocates a structure based on header or count fields and then reads element data into or beyond that buffer. When a crafted WRL file declares one element count but supplies inconsistent indices or geometry data, the parser walks past the allocated region.
Reading past the structure boundary can leak adjacent process memory or corrupt parser state used in subsequent operations. Depending on memory layout, the condition can be steered toward arbitrary code execution within the current user's process context. Exploitation requires user interaction, since a victim must open the malicious file in the affected application.
Root Cause
The root cause is missing or insufficient bounds validation when iterating over indexed geometry or field arrays inside a WRL document. The parser trusts size and index values from the file rather than validating them against the actual allocated buffer length.
Attack Vector
The attack vector is local and requires user interaction. An attacker delivers a malicious .wrl file through email, a shared engineering project, removable media, or a compromised PLM workflow. When the victim opens the file in Teamcenter Visualization or Tecnomatix Plant Simulation, the parser processes the crafted data and triggers the out-of-bounds read.
No verified proof-of-concept code is publicly available. Refer to the Siemens Security Advisory SSA-050438 for vendor-provided technical context.
Detection Methods for CVE-2025-23399
Indicators of Compromise
- Unexpected crashes or memory faults in Teamcenter Visualization or Plant Simulation processes shortly after opening a .wrl file
- Inbound .wrl files originating from untrusted email senders, external collaboration portals, or unverified suppliers
- Child processes spawned by the visualization or simulation application following the opening of a CAD or scene file
Detection Strategies
- Monitor process telemetry for anomalous child processes or shell invocations from Teamcenter Visualization and Tecnomatix Plant Simulation binaries
- Inspect file gateways and email security tooling for .wrl attachments and route them through sandbox analysis before delivery
- Correlate Windows Error Reporting and application crash events with prior file-open activity to identify exploitation attempts
Monitoring Recommendations
- Maintain endpoint logging that captures process creation, image loads, and parent-child relationships for engineering workstations
- Alert on unusual outbound network connections originating from CAD and PLM applications, which typically have predictable traffic patterns
- Track patch deployment status across all Teamcenter Visualization and Tecnomatix Plant Simulation installations to confirm coverage
How to Mitigate CVE-2025-23399
Immediate Actions Required
- Update Teamcenter Visualization and Tecnomatix Plant Simulation to the fixed versions listed in Siemens advisory SSA-050438
- Restrict opening of .wrl files to those received from trusted, verified sources within the engineering supply chain
- Train engineering and design staff to treat unsolicited CAD and visualization files as suspicious
Patch Information
Siemens has released fixed versions: Teamcenter Visualization V14.3.0.13, V2312.0009, V2406.0007, and V2412.0002; Tecnomatix Plant Simulation V2302.0021 and V2404.0010. Full remediation details are available in the Siemens Security Advisory SSA-050438.
Workarounds
- Avoid opening WRL files from untrusted or unknown origins until the patch is applied
- Apply the principle of least privilege so that engineering applications run under non-administrative user accounts
- Use application allowlisting and file-type filtering at email and web gateways to limit exposure to crafted .wrl payloads
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
