CVE-2025-5042 is an out-of-bounds read vulnerability classified under CWE-125, affecting Autodesk Revit versions 2023 through 2026. The vulnerability is triggered when Revit parses a maliciously crafted RFA (Revit Family) file. This malformed input causes the software to read memory outside the intended buffer boundaries, which can lead to several adverse outcomes. These include application crashes (denial of service), unauthorized disclosure of sensitive information residing in adjacent memory, or potentially arbitrary code execution within the context of the Revit process. The vulnerability does not require authentication but does require user interaction to open the malicious file. The CVSS v3.1 score is 7.8, indicating high severity, with attack vector local (requiring user to open a file), low attack complexity, no privileges required, and user interaction needed. The impact scope is unchanged, affecting the confidentiality, integrity, and availability of the affected system. No public exploits have been reported yet, but the potential for exploitation exists given the ability to execute arbitrary code. Autodesk has not yet published patches, so mitigation relies on cautious file handling and monitoring. This vulnerability poses a significant risk to organizations relying on Revit for building information modeling (BIM) workflows, especially those handling untrusted or external RFA files.

The vulnerability can have severe consequences for organizations using Autodesk Revit in their design and construction workflows. Successful exploitation can lead to denial of service via application crashes, exposing operational disruptions. More critically, arbitrary code execution could allow attackers to execute malicious payloads with the privileges of the Revit process, potentially leading to broader system compromise, data theft, or lateral movement within corporate networks. Confidential project data and intellectual property could be exposed, undermining competitive advantage and client confidentiality. The requirement for user interaction (opening a malicious RFA file) means social engineering or supply chain attacks could be vectors. Given Revit's widespread use in architecture, engineering, and construction industries globally, the vulnerability could impact critical infrastructure projects, government contracts, and private sector developments. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers often develop exploits post-disclosure.

1. Monitor Autodesk communications closely for official patches and apply them promptly once released. 2. Until patches are available, implement strict controls on RFA file sources: only open RFA files from trusted, verified sources. 3. Employ network segmentation and endpoint protection to limit the impact of potential exploitation. 4. Use application whitelisting and behavior monitoring to detect anomalous activity related to Revit processes. 5. Educate users about the risks of opening unsolicited or unexpected RFA files, emphasizing phishing and social engineering awareness. 6. Consider sandboxing or opening RFA files in isolated environments to analyze suspicious files safely. 7. Maintain up-to-date backups of critical project data to enable recovery in case of compromise. 8. Review and restrict user privileges to minimize the potential damage from code execution within Revit. 9. Implement file integrity monitoring on directories where RFA files are stored or processed. 10. Collaborate with Autodesk support for guidance and incident response in case of suspected exploitation.