CVE-2025-47107 is a heap-based buffer overflow vulnerability classified under CWE-122 affecting Adobe InCopy versions 20.2, 19.5.3, and earlier. This vulnerability arises when the application improperly handles memory allocation during the processing of certain file inputs, leading to a buffer overflow on the heap. An attacker can craft a malicious InCopy file that, when opened by a user, triggers this overflow, allowing arbitrary code execution within the context of the current user. The vulnerability requires user interaction, specifically opening the malicious file, and does not require any prior authentication, making it accessible to remote attackers who can deliver the file via email, file sharing, or other means. The CVSS 3.1 base score of 7.8 reflects high severity, with attack vector local (AV:L), low attack complexity (AC:L), no privileges required (PR:N), user interaction required (UI:R), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). While no public exploits have been reported, the vulnerability poses a significant risk to users of affected Adobe InCopy versions, particularly in environments where untrusted files may be opened. The lack of a patch at the time of publication necessitates immediate risk mitigation strategies to prevent exploitation.

The exploitation of CVE-2025-47107 can lead to full compromise of the affected system under the privileges of the current user. This includes unauthorized disclosure of sensitive information, modification or deletion of data, and disruption of system availability. For organizations relying on Adobe InCopy for content creation and publishing workflows, successful exploitation could result in intellectual property theft, operational downtime, and potential lateral movement within the network if the compromised user has elevated privileges. The requirement for user interaction limits mass exploitation but does not eliminate risk, especially in environments with high volumes of file exchange or targeted spear-phishing campaigns. The vulnerability's impact is amplified in organizations where users operate with administrative privileges or where InCopy is integrated into critical business processes. Additionally, the absence of known exploits currently provides a window for proactive defense but also underscores the urgency to patch once updates are released.

Until an official patch is released by Adobe, organizations should implement several targeted mitigations: 1) Enforce strict email and file attachment filtering to block or quarantine suspicious InCopy files from untrusted sources. 2) Disable automatic preview or rendering of InCopy files in email clients and file explorers to prevent accidental triggering of the vulnerability. 3) Apply the principle of least privilege by ensuring users operate with minimal necessary permissions to limit the impact of potential code execution. 4) Deploy endpoint detection and response (EDR) solutions capable of detecting anomalous behavior indicative of exploitation attempts, such as unusual memory operations or process injections. 5) Conduct user awareness training focused on recognizing and avoiding opening suspicious or unexpected files, especially from unknown senders. 6) Monitor security advisories from Adobe closely and prioritize patch deployment immediately upon availability. 7) Consider network segmentation to isolate systems running Adobe InCopy from critical infrastructure to contain potential breaches.