CVE-2025-1277 is a high-severity buffer overflow vulnerability (CWE-120) found in Autodesk Revit versions 2023, 2024, and 2025. The vulnerability arises from improper handling of input size during buffer copy operations when parsing maliciously crafted PDF files within Autodesk applications. Specifically, the flaw allows an attacker to supply a specially crafted PDF that triggers memory corruption due to unchecked buffer boundaries. This memory corruption can be exploited to execute arbitrary code within the context of the current process, potentially allowing an attacker to take control of the affected system or escalate privileges depending on the application's permissions. The vulnerability requires local access (Attack Vector: Local) but does not require privileges (PR:N) and only requires user interaction (UI:R) to open or process the malicious PDF. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk given the widespread use of Autodesk Revit in architecture, engineering, and construction industries. The lack of a patch link suggests that a fix may not yet be publicly available, increasing the urgency for mitigation and monitoring. The vulnerability affects multiple recent versions, indicating a persistent issue across product releases.

European organizations using Autodesk Revit, especially in sectors such as architecture, engineering, construction, and manufacturing, face considerable risk from this vulnerability. Successful exploitation could lead to arbitrary code execution, enabling attackers to steal sensitive design data, intellectual property, or disrupt critical project workflows. Given the collaborative nature of these industries and the integration of Revit files in project pipelines, a compromised system could serve as a foothold for lateral movement within corporate networks. This could result in data breaches, operational downtime, and reputational damage. Additionally, the high impact on confidentiality, integrity, and availability means that critical project data could be altered or destroyed, affecting compliance with data protection regulations such as GDPR. The requirement for user interaction (opening a malicious PDF) means that phishing or social engineering campaigns could be used to deliver the exploit, increasing the attack surface. The absence of known exploits in the wild currently provides a window for proactive defense, but organizations should not be complacent given the potential severity.

1. Implement strict email and file filtering to block or quarantine suspicious PDF files, especially those originating from untrusted sources. 2. Educate users on the risks of opening unsolicited or unexpected PDF attachments, emphasizing caution with files related to Autodesk Revit projects. 3. Employ application whitelisting and sandboxing techniques to limit the execution context of Autodesk Revit and associated PDF parsing components. 4. Monitor system and application logs for unusual behavior indicative of exploitation attempts, such as crashes or unexpected process activity. 5. Maintain up-to-date backups of critical project data to enable recovery in case of compromise. 6. Engage with Autodesk support channels to obtain patches or workarounds as soon as they become available, and prioritize timely application of updates. 7. Consider deploying endpoint detection and response (EDR) solutions capable of detecting exploitation techniques related to buffer overflows and memory corruption. 8. Restrict local user permissions to minimize the impact of code execution within the Revit process context. 9. If possible, disable or restrict PDF parsing features within Autodesk applications until patches are applied.