Autodesk Trust Center

Security advisory

Advisories are used to communicate information related to vulnerabilities identified with Autodesk® products and services. This includes any fixes or workarounds that are applicable to the affected product.

Out-of-Bounds Write Vulnerability in Arnold


Autodesk ID: ADSK-SA-2026-0003

Product, Service, Component: Autodesk USD for Arnold, Autodesk Arnold, Autodesk 3ds Max

Impact: Out-of-Bounds Write

Severity: High

Original Publish: 02/04/2026

Last Revised: 02/04/2026

Severity CVSS Score Impact
Low 0.1 - 3.9 A vulnerability where scope and impact of exploitation is restricted and the ability to exploit is extremely difficult.
Medium 4.0 - 6.9 A vulnerability where exploitation is mitigated by factors such as difficulty to exploit, default configuration or ease of identification.
High 7.0 - 8.9 A vulnerability, which if exploited, would directly impact the confidentiality, integrity or availability of user's data or processing resources.
Critical 9.0 - 10 A vulnerability, which if exploited, would allow remote execution of malicious code without user action.

Summary

The USD (Universal Scene Description) functionality within Autodesk Arnold and Autodesk 3ds Max is affected by the vulnerability listed below. Exploitation of this vulnerability can lead to arbitrary code execution. Exploitation of this vulnerability requires user interaction.

Description

The details of the vulnerability are as follows: 

  1. CVE-2026-0659: A maliciously crafted USD file, when loaded or imported into Autodesk Arnold or Autodesk 3ds Max, can force an Out-of-Bounds Write vulnerability. A malicious actor can leverage this vulnerability to execute arbitrary code in the context of the current process.

Affected Products

Item: Autodesk USD for Arnold

Impacted Versions: Arnold USD 7.4.4.1 or earlier

Mitigated Versions: Arnold USD 7.4.4.2

Update Source: GitHub - Autodesk/arnold-usd: Arnold components for USD

 

Item: Autodesk Arnold

Impacted Versions: 7.4.4.1 or earlier

Mitigated Versions: 7.4.4.2

Update Source: Autodesk Access or Accounts Portal

 

Item: Autodesk 3ds Max

Impacted Versions: 2026.2

Mitigated Versions: 2026.3.2

Update Source: Autodesk Access or Accounts Portal

 

*Note: Product list subject to change.

Recommendations

Autodesk highly recommends that customers of the affected products install the latest mitigated product versions noted above, as applicable. These updates are available via the Arnold USD GitHub repository, Autodesk Access or the Accounts Portal. As a general best practice, we also recommend that customers only open files from trusted sources. 

Acknowledgements

We thank the following researcher for reporting the relevant issues and for working with Autodesk to help protect our users: 

  • jony_juice for reporting CVE-2026-0659.

Revision History

Revision: 1.0

Date: 02/04/2026

Description: Initial Release of the Security Advisory


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