CVE-2025-30317 is a high-severity heap-based buffer overflow vulnerability (CWE-122) affecting Adobe InDesign Desktop versions ID20.2, ID19.5.3, and earlier. This vulnerability arises from improper handling of memory buffers on the heap, which can be exploited when a user opens a specially crafted malicious InDesign file. The flaw allows an attacker to overwrite adjacent memory, potentially leading to arbitrary code execution within the context of the current user. Exploitation requires user interaction, specifically opening a malicious file, and does not require prior authentication or elevated privileges. 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. While no known exploits are currently reported in the wild, the vulnerability poses a significant risk due to the widespread use of Adobe InDesign in creative and publishing industries. The vulnerability could be leveraged to execute malicious payloads, steal sensitive data, or disrupt operations on affected systems.

For European organizations, this vulnerability presents a substantial risk, especially for sectors relying heavily on Adobe InDesign for desktop publishing, such as media, advertising, publishing houses, and design agencies. Successful exploitation could lead to unauthorized code execution, data breaches, and potential disruption of business operations. Given the high confidentiality, integrity, and availability impacts, attackers could exfiltrate sensitive intellectual property or deploy ransomware. The requirement for user interaction means phishing or social engineering campaigns could be used to deliver malicious files, increasing the risk in environments where users frequently exchange design files. The impact is amplified in organizations with less mature endpoint protection or where patch management is delayed. Additionally, the vulnerability could be exploited to establish footholds within networks, facilitating lateral movement and further compromise.

Organizations should prioritize updating Adobe InDesign Desktop to the latest patched versions once available. Until patches are released, implement strict email and file filtering to block or quarantine suspicious InDesign files, especially from untrusted sources. Educate users about the risks of opening unsolicited or unexpected design files and encourage verification of file origins. Employ endpoint detection and response (EDR) solutions capable of monitoring and blocking suspicious behaviors related to memory corruption exploits. Restrict user permissions to limit the impact of potential code execution. Network segmentation can help contain any compromise. Regularly back up critical data and verify restore procedures to mitigate ransomware risks. Additionally, monitor threat intelligence feeds for any emerging exploit activity related to this CVE to enable rapid response.