CVE-2026-0661 is a vulnerability identified in Autodesk 3ds Max 2026, classified under CWE-787 (Out-of-bounds Write). The flaw arises when the software parses RGB files that are maliciously crafted to trigger a memory corruption condition. Specifically, the vulnerability allows an attacker to write data outside the bounds of allocated memory buffers, which can corrupt memory and enable arbitrary code execution within the context of the 3ds Max process. Exploitation requires that a user opens a specially crafted RGB file, implying user interaction is necessary. The CVSS v3.1 score is 7.8, reflecting a high severity due to the potential for full compromise of the affected application’s process, impacting confidentiality, integrity, and availability. The attack vector is local (AV:L), meaning the attacker must have local access or trick a user into opening the file. No privileges are required (PR:N), but user interaction is mandatory (UI:R). The vulnerability scope is unchanged (S:U), indicating the impact is confined to the vulnerable component. Currently, no public exploits are known, and no patches have been released yet, though the vulnerability is publicly disclosed. This vulnerability is particularly critical for environments where 3ds Max is used to process untrusted or external RGB files, such as in collaborative design or media production workflows.

For European organizations, the impact of CVE-2026-0661 can be significant, especially in industries relying heavily on Autodesk 3ds Max, such as media production, architecture, engineering, and manufacturing design. Successful exploitation could lead to arbitrary code execution, allowing attackers to steal sensitive intellectual property, disrupt design workflows, or deploy further malware within corporate networks. The compromise of 3ds Max processes could also serve as a foothold for lateral movement in enterprise environments. Given the high confidentiality, integrity, and availability impact, organizations could face operational downtime, loss of proprietary data, and reputational damage. The requirement for user interaction means phishing or social engineering could be leveraged to deliver the malicious RGB files, increasing the risk in environments with less stringent file handling policies. The absence of patches at the time of disclosure necessitates immediate compensating controls to reduce exposure.

1. Restrict the opening of RGB files from untrusted or external sources until a patch is available. 2. Implement strict file validation and scanning policies on files before they reach end users, especially those using 3ds Max. 3. Employ application whitelisting and sandboxing to limit the impact of potential exploitation within 3ds Max. 4. Educate users on the risks of opening files from unknown or untrusted origins and promote cautious behavior. 5. Monitor 3ds Max processes for anomalous behavior indicative of exploitation attempts, such as unexpected memory usage or spawning of unusual child processes. 6. Once Autodesk releases a patch, prioritize its deployment across all affected systems. 7. Use endpoint detection and response (EDR) tools to detect and respond to suspicious activities related to this vulnerability. 8. Consider network segmentation to isolate systems running 3ds Max from critical infrastructure to limit lateral movement if compromised.