CVE-2025-65084 is an out-of-bounds write vulnerability classified under CWE-787, affecting multiple Ashlar-Vellum products including Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.207 and earlier. The vulnerability arises when the software improperly handles memory boundaries, allowing an attacker to write data outside the intended buffer. This can lead to arbitrary code execution or information disclosure. The CVSS 4.0 vector indicates the attack requires local access (AV:L), low attack complexity (AC:L), no privileges (PR:N), and user interaction (UI:A). The impact on confidentiality, integrity, and availability is high (VC:H, VI:H, VA:H). The flaw does not require network access or authentication, but the attacker must have local access and trick a user into interaction, such as opening a crafted file or triggering a specific action within the software. No patches or known exploits are currently available, but the vulnerability is publicly disclosed and rated high severity. Ashlar-Vellum software is used primarily in CAD and design environments, making this a critical concern for organizations relying on these tools for product development and engineering workflows.

For European organizations, the vulnerability poses significant risks, especially in sectors such as manufacturing, automotive, aerospace, and industrial design, where Ashlar-Vellum products are commonly used. Successful exploitation could lead to unauthorized disclosure of proprietary design data, intellectual property theft, or disruption of design processes through arbitrary code execution. This could result in financial losses, reputational damage, and potential regulatory compliance issues under GDPR if sensitive data is exposed. The requirement for local access limits remote exploitation but insider threats or compromised endpoints could be leveraged by attackers. The high impact on confidentiality, integrity, and availability means that even a single exploited instance could have severe operational consequences. Organizations with distributed design teams or third-party contractors using these products are particularly vulnerable to supply chain or insider attack vectors.

Given the absence of patches, European organizations should implement strict access controls to limit local access to systems running Ashlar-Vellum software. Employ endpoint protection solutions with behavior-based detection to identify anomalous memory manipulation or code execution attempts. Educate users on the risks of opening untrusted files or interacting with suspicious content within the software. Use application whitelisting and sandboxing techniques to contain potential exploitation. Regularly back up design data and maintain version control to recover from potential corruption or ransomware attacks. Monitor logs and system behavior for signs of exploitation attempts. Coordinate with Ashlar-Vellum for timely patch releases and prepare for rapid deployment once available. Consider network segmentation to isolate design workstations from critical infrastructure. Finally, conduct vulnerability assessments and penetration testing focused on local attack vectors to evaluate exposure.