Adobe InCopy is vulnerable to a heap-based buffer overflow that could allow an attacker to execute arbitrary code on the victim's system via a malicious file.

This is a heap-based buffer overflow (CWE-122) triggered when a user opens a malicious file, requiring user interaction. The vulnerability allows for arbitrary code execution within the context of the current user.

The potential for arbitrary code execution presents a significant risk to organizational security, as it could lead to full system compromise or unauthorized data exfiltration. Given the CVSS score of 7.8, this vulnerability is classified as High severity. Successful exploitation could result in severe reputational damage, loss of intellectual property, and operational downtime for affected workstations.

Immediate Action: Update Adobe InCopy to the latest version provided by the vendor in the security advisory at https://helpx.adobe.com/security/products/incopy/apsb25-107.html.

Proactive Monitoring: Monitor system logs for unusual crashes or unexpected process execution patterns immediately following the opening of document files.

Compensating Controls: Implement endpoint protection solutions capable of detecting buffer overflow attempts and restrict the ability of users to open files from untrusted or external sources.

Public Exploit Available: No

The severity of this heap-based buffer overflow necessitates prompt attention from IT and security teams. Organizations should prioritize patching all installations of Adobe InCopy to the latest version to eliminate the risk of arbitrary code execution. Users should also be reminded to exercise caution when opening files from unknown or untrusted sources until the software has been updated.