CVE-2025-54273 is an out-of-bounds write vulnerability classified under CWE-787 affecting Adobe Substance3D - Viewer versions 0.25.2 and earlier. The vulnerability arises when the software improperly handles memory boundaries during file processing, allowing an attacker to overwrite memory outside the intended buffer. This can lead to arbitrary code execution within the context of the current user. Exploitation requires the victim to open a specially crafted malicious file, making user interaction mandatory. The vulnerability does not require any prior authentication or elevated privileges, increasing its risk profile. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. Although no public exploits are known at this time, the lack of available patches means the vulnerability remains unmitigated. Adobe Substance3D - Viewer is widely used in digital content creation, particularly in 3D modeling and visualization workflows, making this vulnerability relevant to creative professionals and organizations relying on these tools. The flaw could be leveraged to execute malicious payloads, steal sensitive data, or disrupt operations by corrupting application state or crashing the software.

For European organizations, particularly those in the creative, media, and design sectors that utilize Adobe Substance3D - Viewer, this vulnerability poses a significant risk. Successful exploitation could lead to unauthorized code execution, enabling attackers to steal intellectual property, deploy ransomware, or move laterally within networks. The impact extends to confidentiality breaches of proprietary designs and models, integrity violations through data manipulation, and availability disruptions if the application or host system is destabilized. Given the requirement for user interaction, phishing or social engineering campaigns could be used to deliver malicious files. Organizations with remote or hybrid workforces may face increased exposure due to less controlled environments. Additionally, the lack of patches means that until Adobe releases an update, defensive measures must rely on detection and prevention strategies. The potential for widespread impact is heightened in countries with large digital creative industries and extensive use of Adobe products.

1. Educate users on the risks of opening files from untrusted or unknown sources, emphasizing caution with files related to Substance3D - Viewer. 2. Implement strict email and file filtering to block or quarantine suspicious attachments that could exploit this vulnerability. 3. Employ endpoint detection and response (EDR) solutions to monitor for anomalous behaviors indicative of exploitation attempts, such as unexpected memory writes or process injections. 4. Restrict the execution environment of Substance3D - Viewer using application whitelisting and sandboxing techniques to limit the impact of potential exploits. 5. Maintain up-to-date backups of critical design and project files to enable recovery in case of compromise. 6. Monitor Adobe’s security advisories closely for the release of patches or updates addressing this vulnerability and prioritize immediate deployment upon availability. 7. Consider network segmentation to isolate systems running Substance3D - Viewer from sensitive infrastructure to reduce lateral movement risk. 8. Use file integrity monitoring to detect unauthorized changes to application files or configurations.