Stack-based Buffer Overflow in Autodesk FBX SDK

Autodesk has disclosed a stack-based buffer overflow vulnerability, tracked as CVE-2026-10709, affecting the FBX SDK. The vulnerability is located within the fbxsdk::FbxIO::BinaryReadSectionHeader function. This flaw allows a remote attacker to achieve arbitrary code execution in the context of the application parsing a maliciously crafted FBX file. The FBX SDK is widely integrated into various 3D modeling, game development, and rendering software, making this vulnerability highly relevant for organizations utilizing professional design and animation workflows. The vulnerability impacts FBX SDK versions prior to 2020.3.10. Successful exploitation requires user interaction, such as opening a malicious file in a vulnerable application. Given the ubiquity of 3D asset processing in media and engineering sectors, this vulnerability represents a significant risk for the execution of unauthorized code on workstations or build servers.

Attack Chain

1. The attacker creates a specially crafted FBX file designed to trigger an overflow in BinaryReadSectionHeader.
2. The attacker delivers the malicious file to the target user via email, file share, or public asset repository.
3. A user opens the file using an application (e.g., a 3D modeling tool) that links against a vulnerable version of the Autodesk FBX SDK.
4. The application triggers the fbxsdk::FbxIO::BinaryReadSectionHeader function during the asset parsing stage.
5. The malformed section header causes a buffer overflow on the stack.
6. The attacker leverages the overflow to overwrite control flow data, redirecting execution to their payload.
7. The arbitrary code executes with the privileges of the user running the application.

Impact

The vulnerability allows an attacker to execute arbitrary code with the privileges of the local user. In enterprise environments, this could lead to the installation of malware, persistence mechanisms, or the exfiltration of sensitive design assets. All sectors utilizing 3D content creation pipelines, including game development, architecture, and engineering, are potentially exposed.

Recommendation

Prioritized actions for security and IT teams:

• Audit software inventories to identify applications utilizing Autodesk FBX SDK version 2020.3.9 or earlier.
• Coordinate with vendors of affected 3D modeling software to deploy updates to the underlying FBX SDK.
• Implement file integrity and source scanning for incoming 3D assets to prevent the use of malicious FBX files.
• Disable the automatic parsing of external or untrusted FBX files in high-risk environments until patches are applied.