CVE-2025-30327 is a high-severity integer overflow or wraparound vulnerability (CWE-190) found in Adobe InCopy versions 20.2, 19.5.3, and earlier. The vulnerability arises when the software improperly handles integer values, causing an overflow or wraparound condition. This flaw can be triggered when a user opens a specially crafted malicious file, leading to potential arbitrary code execution within the context of the current user. The vulnerability requires user interaction, specifically opening a malicious file, which means exploitation is not possible without some level of user involvement. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with attack vector local (AV:L), low attack complexity (AC:L), no privileges required (PR:N), and user interaction required (UI:R). The scope remains unchanged (S:U), indicating the vulnerability affects only the vulnerable component. Successful exploitation could allow an attacker to execute arbitrary code, potentially leading to data theft, system compromise, or further malware deployment. No known exploits in the wild have been reported yet, and no patches have been linked at the time of publication, indicating organizations should prioritize monitoring and mitigation efforts. Adobe InCopy is a professional word processing software widely used in editorial and publishing workflows, often integrated with Adobe InDesign, making it a critical tool in media and publishing sectors.

For European organizations, the impact of this vulnerability could be significant, especially for media, publishing, and creative industries that rely heavily on Adobe InCopy for content creation and editorial workflows. Exploitation could lead to unauthorized code execution, resulting in data breaches, intellectual property theft, or disruption of publishing operations. Given the high confidentiality, integrity, and availability impact, compromised systems could lead to loss of sensitive editorial content or manipulation of published materials. Additionally, since the vulnerability requires user interaction, targeted phishing or social engineering campaigns could be used to deliver malicious files, increasing risk to organizations with less mature security awareness programs. The lack of available patches at the time of disclosure increases the window of exposure. Organizations handling sensitive or regulated content, such as news agencies or governmental communication departments, could face reputational damage and regulatory consequences if exploited.

European organizations should implement a multi-layered mitigation strategy: 1) Immediately restrict or monitor the use of Adobe InCopy versions 20.2, 19.5.3, and earlier until patches are available. 2) Educate users on the risks of opening files from untrusted or unknown sources, emphasizing the need for caution with email attachments and downloads. 3) Employ application whitelisting and sandboxing techniques to limit the execution context of Adobe InCopy and contain potential exploits. 4) Use endpoint detection and response (EDR) tools to monitor for unusual behaviors indicative of exploitation attempts. 5) Network segmentation should be applied to isolate systems running Adobe InCopy from critical infrastructure. 6) Maintain up-to-date backups of editorial content to enable recovery in case of compromise. 7) Monitor threat intelligence feeds for any emerging exploits or patches related to CVE-2025-30327 and apply updates promptly once available. 8) Implement strict file scanning policies on email gateways and endpoint antivirus solutions to detect malicious files targeting this vulnerability.