CVE-2025-1277 is a medium-severity memory corruption vulnerability classified under CWE-120, which involves a classic buffer overflow due to improper handling of input size during buffer copy operations. This vulnerability affects Autodesk Revit versions 2023, 2024, and 2025. The flaw arises when a maliciously crafted PDF file is parsed by Autodesk Revit or related Autodesk applications. Specifically, the application fails to properly check the size of input data before copying it into a buffer, leading to a buffer overflow condition. This memory corruption can be exploited by an attacker to execute arbitrary code within the context of the current process. Since Revit is a widely used Building Information Modeling (BIM) software, the vulnerability could be leveraged to compromise the confidentiality, integrity, and availability of systems running the affected versions. Although no public exploits have been reported in the wild to date, the nature of the vulnerability—arbitrary code execution via a crafted PDF—makes it a significant risk if weaponized. The attack vector requires the victim to open or process a malicious PDF file within the Autodesk Revit environment, which may be delivered via email, shared project files, or external sources. The vulnerability does not require authentication, increasing its risk profile, but it does require user interaction to open the malicious file. Autodesk has not yet published patches or mitigations, so organizations must rely on interim protective measures until official updates are available.

For European organizations, the impact of this vulnerability could be substantial, particularly for those in architecture, engineering, and construction sectors that rely heavily on Autodesk Revit for BIM workflows. Successful exploitation could lead to unauthorized code execution, enabling attackers to deploy malware, steal sensitive design data, manipulate project files, or disrupt operations. This could result in intellectual property theft, project delays, financial losses, and reputational damage. Additionally, compromised systems could serve as footholds for lateral movement within corporate networks, potentially exposing other critical infrastructure. Given the collaborative nature of BIM projects, the risk extends to supply chain partners and subcontractors who exchange Revit files, increasing the attack surface. The vulnerability's exploitation via PDF files also means that standard email and file-sharing channels could be vectors, raising the risk of targeted spear-phishing campaigns. The medium severity rating reflects the requirement for user interaction and the absence of known exploits, but the potential for arbitrary code execution elevates the threat beyond a typical denial-of-service or information disclosure scenario.

1. Implement strict email and file filtering policies to block or quarantine suspicious PDF files, especially those originating from untrusted or unknown sources. 2. Educate users, particularly architects, engineers, and BIM coordinators, about the risks of opening unsolicited or unexpected PDF files within Autodesk Revit environments. 3. Employ application whitelisting and sandboxing techniques to restrict the execution context of Autodesk Revit and limit the impact of potential exploitation. 4. Monitor network and endpoint logs for unusual behavior indicative of exploitation attempts, such as unexpected process launches or memory anomalies related to Revit. 5. Coordinate with Autodesk support channels to obtain early access to patches or security advisories and prioritize timely deployment once available. 6. Where feasible, isolate Revit workstations from critical network segments to reduce lateral movement risk. 7. Use endpoint detection and response (EDR) solutions capable of detecting exploitation techniques related to buffer overflows and memory corruption. 8. Maintain regular backups of project files and system states to enable recovery in case of compromise.