CVE-2025-5046 is an out-of-bounds read vulnerability classified under CWE-125 affecting Autodesk AutoCAD versions 2023 to 2026. The flaw is triggered when AutoCAD processes a maliciously crafted DGN file during linking or import operations. This vulnerability allows an attacker to read memory beyond the intended buffer boundaries, which can lead to application crashes, unauthorized disclosure of sensitive information, or even arbitrary code execution within the context of the AutoCAD process. The attack vector requires local access with user interaction, as the victim must open or link the malicious DGN file. The vulnerability does not require prior authentication, increasing its risk profile in environments where AutoCAD files are shared or received from untrusted sources. The CVSS v3.1 base score of 7.8 reflects high severity, with metrics indicating low attack complexity, no privileges required, and high impact on confidentiality, integrity, and availability. Although no exploits have been observed in the wild yet, the potential for severe impact on critical design and engineering workflows is significant. Autodesk has not yet published patches, so organizations must monitor for updates and apply them promptly once available. The vulnerability underscores the need for robust input validation and secure file handling in complex CAD software processing proprietary file formats like DGN.

The vulnerability poses a serious threat to organizations relying on Autodesk AutoCAD for design, engineering, and architectural workflows. Successful exploitation can lead to application crashes causing denial of service, leakage of sensitive intellectual property or design data, and potentially full compromise of the AutoCAD process through arbitrary code execution. This can disrupt critical project timelines, expose proprietary or confidential information, and facilitate further network intrusion if leveraged as a foothold. Given AutoCAD’s widespread use in industries such as manufacturing, construction, and infrastructure, the impact could extend to supply chain disruptions and loss of competitive advantage. The requirement for user interaction limits remote exploitation but does not eliminate risk, especially in environments where files are exchanged frequently. The absence of known exploits in the wild currently reduces immediate risk but does not preclude future attacks, especially as threat actors often develop exploits rapidly after public disclosure.

Organizations should implement a multi-layered mitigation strategy: 1) Monitor Autodesk’s official channels closely and apply security patches immediately upon release to remediate the vulnerability. 2) Enforce strict file handling policies, including scanning and validating all DGN files before importing or linking them in AutoCAD, especially those received from untrusted or external sources. 3) Educate users on the risks of opening unsolicited or suspicious CAD files and encourage verification of file provenance. 4) Employ application whitelisting and sandboxing techniques to limit the impact of potential exploitation within the AutoCAD process. 5) Use network segmentation to isolate critical design workstations and restrict access to file shares where CAD files are stored. 6) Consider disabling automatic linking or importing of external DGN files if feasible within operational workflows. 7) Maintain up-to-date endpoint detection and response (EDR) solutions capable of detecting anomalous behavior indicative of exploitation attempts. These targeted measures go beyond generic advice by focusing on the specific attack vector and operational context of AutoCAD usage.