CVE-2026-1289 in Revit
Summary
by MITRE • 08/07/2026
A maliciously crafted PDF file, when parsed through Autodesk Revit, can force a Use-After-Free vulnerability. A malicious actor can leverage this vulnerability to cause a crash, disclose sensitive data, or execute arbitrary code in the context of the current process.
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Analysis
by VulDB Data Team • 08/07/2026
This vulnerability represents a critical security flaw in Autodesk Revit software that arises from improper handling of malformed PDF files during the parsing process. The issue manifests as a use-after-free condition that occurs when the application attempts to access memory that has already been released, creating a dangerous exploitation vector for malicious actors. The vulnerability stems from insufficient input validation and memory management controls within the PDF processing module, which fails to properly sanitize or verify the integrity of externally provided document content before attempting to parse it.
The technical nature of this flaw places it squarely within the realm of memory corruption vulnerabilities, specifically categorized under CWE-416 Use After Free, which is a well-documented weakness in software security practices. When a specially crafted PDF file is opened within Revit, the application's PDF parser encounters malformed structures that trigger improper memory deallocation followed by subsequent access attempts to freed memory regions. This fundamental breakdown in memory management creates opportunities for attackers to manipulate the execution flow of the vulnerable process through carefully constructed payload data.
From an operational perspective, this vulnerability presents significant risks to organizations relying on Autodesk Revit for design and engineering work. The potential impact extends beyond simple application instability to encompass serious security implications including arbitrary code execution, information disclosure, and system compromise. Attackers could exploit this weakness to gain unauthorized access to sensitive project data, execute malicious payloads, or establish persistent footholds within target networks. The vulnerability is particularly concerning because it requires no elevated privileges to exploit, as the malicious PDF file can be delivered through standard email attachments or web downloads.
The attack surface for this vulnerability encompasses any user who opens or previews PDF files within Autodesk Revit applications, making it a widespread concern across architectural, engineering, and construction industries. The exploitation technique leverages the ATT&CK framework's T1059.007 component for command and scripting interpreter, potentially enabling attackers to execute shell commands or other malicious operations through the compromised application process. Organizations should consider implementing multi-layered security controls including email filtering, web proxy protections, and network segmentation to mitigate exposure while awaiting official patches from Autodesk.
Mitigation strategies should include immediate deployment of vendor-provided security updates, implementation of strict file validation policies for PDF content, and network-based intrusion detection systems monitoring for suspicious PDF-related traffic patterns. Security teams must also conduct regular vulnerability assessments targeting Revit installations and establish incident response procedures specifically addressing potential exploitation attempts. The underlying memory corruption nature of this vulnerability underscores the importance of keeping all software components updated and implementing robust input sanitization controls to prevent similar issues from occurring in other applications within the organization's attack surface.