CVE-2025-47099 is a heap-based buffer overflow vulnerability (CWE-122) affecting Adobe InCopy versions 20.3, 19.5.3, and earlier. This vulnerability arises when the application improperly handles memory allocation or input data, allowing an attacker to overflow a buffer on the heap. Exploiting this flaw can lead to arbitrary code execution within the context of the current user. The attack vector requires user interaction, specifically the victim opening a maliciously crafted InCopy file. Once triggered, the vulnerability can compromise confidentiality, integrity, and availability by enabling execution of attacker-controlled code, potentially leading to data theft, system manipulation, or denial of service. The CVSS v3.1 base score is 7.8 (high severity), reflecting the local attack vector (AV:L), low attack complexity (AC:L), no privileges required (PR:N), required user interaction (UI:R), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). No known exploits are currently reported in the wild, and no official patches or mitigation links have been published yet. Given Adobe InCopy's role as a professional writing and editorial tool, this vulnerability poses a significant risk to users who handle untrusted or externally sourced InCopy files.

For European organizations, the impact of CVE-2025-47099 can be substantial, especially in sectors relying heavily on Adobe InCopy for content creation, publishing, and editorial workflows such as media companies, publishing houses, marketing agencies, and corporate communications departments. Successful exploitation could lead to unauthorized code execution, enabling attackers to steal sensitive intellectual property, manipulate editorial content, or establish persistence within corporate networks. The high confidentiality, integrity, and availability impacts mean that data breaches, content tampering, and operational disruptions are plausible. Since exploitation requires user interaction, targeted phishing or social engineering campaigns could be used to deliver malicious InCopy files. The threat is particularly relevant for organizations with remote or hybrid workforces where file sharing and collaboration are common. Additionally, compromised endpoints could serve as footholds for lateral movement or ransomware deployment, amplifying the overall risk to European enterprises.

1. Immediate mitigation should focus on user awareness and training to avoid opening InCopy files from untrusted or unknown sources. 2. Implement strict email and file filtering policies to detect and block suspicious InCopy files or attachments. 3. Employ endpoint detection and response (EDR) solutions capable of monitoring unusual process behaviors or memory anomalies indicative of exploitation attempts. 4. Use application whitelisting to restrict execution of unauthorized code and sandboxing technologies to isolate InCopy processes where feasible. 5. Maintain up-to-date backups of critical data to enable recovery in case of compromise. 6. Monitor Adobe’s official channels for patches or security advisories and apply updates promptly once available. 7. Consider network segmentation to limit the spread of an infection originating from a compromised workstation. 8. Conduct regular vulnerability assessments and penetration testing focused on client-side applications like Adobe InCopy to identify and remediate weaknesses proactively.