CVE-2025-24440 is an out-of-bounds write vulnerability (CWE-787) found in Adobe Substance3D - Sampler versions 4.5.2 and earlier. This vulnerability arises when the software improperly handles memory boundaries during processing of input files, allowing an attacker to write data beyond the allocated buffer. Such memory corruption can be leveraged to execute arbitrary code within the context of the current user. The attack vector requires the victim to open a maliciously crafted file, making user interaction mandatory. The vulnerability has a CVSS 3.1 base score of 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. The scope is unchanged, indicating the exploit affects only the vulnerable application context. Although no public exploits are known, the potential for arbitrary code execution makes this a critical concern for users of Substance3D - Sampler, especially in creative and design environments where untrusted files may be received. Adobe has not yet published patches, so mitigation currently relies on user awareness and restricting file sources.

If exploited, this vulnerability could allow attackers to execute arbitrary code with the same privileges as the logged-in user, potentially leading to data theft, system manipulation, or deployment of malware. The compromise could affect the confidentiality of sensitive design assets, integrity of creative projects, and availability of the Substance3D application or the host system. In environments where users have elevated privileges, the impact could extend to full system compromise. The requirement for user interaction limits mass exploitation but targeted attacks against designers, artists, or studios using Substance3D - Sampler could result in significant operational disruption and intellectual property loss. The absence of known exploits currently reduces immediate risk but does not eliminate the threat as attackers may develop exploits once patches are released.

Until Adobe releases an official patch, organizations should implement strict controls on file sources, ensuring that only trusted and verified files are opened in Substance3D - Sampler. User training should emphasize the risks of opening files from unknown or untrusted origins. Employ application whitelisting and sandboxing techniques to limit the execution context of Substance3D - Sampler, reducing potential damage from exploitation. Monitor systems for unusual behavior indicative of exploitation attempts. Maintain up-to-date backups of critical design data to enable recovery in case of compromise. Once Adobe issues a patch, prioritize immediate deployment across all affected systems. Consider network segmentation to isolate design workstations and reduce lateral movement opportunities for attackers.