CVE-2026-7451: 
Autodesk 3ds Max vulnerability analysis and mitigation

CVE-2026-7451 is an Out-of-Bounds Write vulnerability in Autodesk 3ds Max triggered by parsing a maliciously crafted TIF file. It affects Autodesk 3ds Max versions 2026 (prior to 2026.1) and 2027 (prior to 2027.1). The vulnerability was published on May 26, 2026, and carries a CVSS v3.1 base score of 7.8 (High) (Autodesk Advisory, GitHub Advisory).

The vulnerability is classified as CWE-787 (Out-of-Bounds Write), occurring when Autodesk 3ds Max improperly handles a specially crafted TIF image file during parsing, writing data beyond the bounds of an allocated buffer. The attack vector is local, requiring no privileges but necessitating user interaction — specifically, a victim must open a malicious TIF file. Exploitation could be achieved via social engineering, phishing, or delivering a crafted file through shared network resources or email attachments (Autodesk Advisory, GitHub Advisory).

Successful exploitation can result in application crashes (denial of service), data corruption, or arbitrary code execution within the context of the user running Autodesk 3ds Max. All three security pillars are affected at a high level: confidentiality, integrity, and availability. An attacker who achieves code execution gains the same privileges as the victim user, potentially enabling access to sensitive project files, credentials stored on the system, or further lateral movement within the local network (Autodesk Advisory, GitHub Advisory).

1. Craft malicious TIF file: An attacker creates a specially crafted TIF image file designed to trigger an out-of-bounds write when parsed by Autodesk 3ds Max's TIF file parser.
2. Deliver the file to the target: The attacker delivers the malicious TIF file to a victim via email attachment, shared network drive, USB media, or a malicious download link, relying on social engineering to convince the user to open it.
3. Victim opens the file: The victim opens the crafted TIF file in Autodesk 3ds Max 2026 (prior to 2026.1) or 2027 (prior to 2027.1).
4. Trigger out-of-bounds write: During TIF file parsing, the application writes data beyond the bounds of an allocated buffer, corrupting adjacent memory.
5. Achieve code execution: Depending on memory layout and attacker control over the written data, the memory corruption can be leveraged to redirect execution flow and run arbitrary code with the privileges of the victim user (Autodesk Advisory, GitHub Advisory).

• Process: Autodesk 3ds Max process (3dsmax.exe) crashing unexpectedly or spawning unusual child processes (e.g., cmd.exe, powershell.exe, curl.exe) after opening a TIF file.
• File System: Presence of unexpected or recently modified TIF files in user download directories, temp folders, or shared drives; new executable files or scripts created in user-writable directories around the time of a crash.
• Logs: Windows Event Logs showing application crash events (Event ID 1000/1001) for 3dsmax.exe; Dr. Watson or Windows Error Reporting entries referencing memory access violations in the 3ds Max process.
• Network: Unexpected outbound network connections from 3dsmax.exe to external IP addresses following file open events.

Autodesk has released patched versions addressing this vulnerability: 3ds Max 2026.1 and 3ds Max 2027.1. Users should update immediately via Autodesk Access or the Autodesk desktop app (Autodesk Advisory). As interim mitigations, organizations should restrict users from opening TIF files from untrusted or unknown sources, implement email attachment filtering for TIF files where feasible, and educate users about the risks of opening files from unverified sources.