CVE-2025-54245 is a high-severity vulnerability identified in Adobe Substance3D - Viewer versions 0.25.1 and earlier. The vulnerability is classified as an out-of-bounds write (CWE-787), which occurs when the software writes data outside the boundaries of allocated memory buffers. This type of flaw can lead to memory corruption, potentially allowing an attacker to execute arbitrary code within the context of the current user. Exploitation requires user interaction, specifically that the victim opens a specially crafted malicious file using the vulnerable Substance3D - Viewer application. The CVSS v3.1 base score is 7.8, reflecting a high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required, but user interaction is necessary. The vulnerability affects the core functionality of the application that processes 3D content files, which are commonly used in digital content creation, gaming, and design industries. Although no known exploits are currently reported in the wild, the potential for arbitrary code execution makes this a significant threat, especially in environments where Adobe Substance3D - Viewer is used to handle untrusted or externally sourced 3D assets. The absence of available patches at the time of publication increases the urgency for organizations to implement mitigations.

For European organizations, the impact of this vulnerability could be substantial, particularly for companies involved in digital media, gaming, architecture, and design sectors that rely on Adobe Substance3D - Viewer for 3D content visualization. Successful exploitation could lead to unauthorized code execution, enabling attackers to steal sensitive intellectual property, deploy malware, or move laterally within networks. This could compromise confidentiality of proprietary designs or client data, disrupt business operations, and damage reputations. Given the user interaction requirement, phishing or social engineering campaigns could be leveraged to trick employees into opening malicious files. The high integrity and availability impact means that critical workflows involving 3D content could be interrupted, affecting project timelines and deliverables. Additionally, organizations with less mature cybersecurity awareness or lacking strict file handling policies are at greater risk. The threat is amplified in environments where endpoint protection and application whitelisting are not rigorously enforced.

To mitigate this vulnerability, European organizations should implement a multi-layered approach: 1) Immediately restrict the use of Adobe Substance3D - Viewer to trusted users and environments until a patch is available. 2) Educate users about the risks of opening untrusted or unsolicited 3D files, emphasizing caution with files received via email or external sources. 3) Employ application control and sandboxing techniques to limit the execution context of Substance3D - Viewer, reducing 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. 5) Use advanced endpoint detection and response (EDR) tools capable of detecting out-of-bounds memory operations or anomalous code execution patterns. 6) Establish strict file validation and scanning policies for 3D asset files before they are opened or imported into the viewer. 7) Coordinate with Adobe for timely updates and apply patches as soon as they become available. 8) Consider isolating systems that handle high volumes of external 3D content to minimize exposure.