CVE-2025-30327 is an integer overflow or wraparound vulnerability classified under CWE-190 affecting Adobe InCopy versions 20.2, 19.5.3, and earlier. The vulnerability arises when the software improperly handles integer values, leading to overflow conditions that can be exploited to corrupt memory or bypass security checks. This flaw enables an attacker to execute arbitrary code within the context of the current user, potentially leading to full compromise of the user's environment. Exploitation requires the victim to open a maliciously crafted InCopy file, making user interaction necessary. The vulnerability does not require prior authentication, increasing its risk profile. 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. Currently, no patches or known exploits are publicly available, but the vulnerability is published and should be addressed promptly. The flaw could be leveraged in targeted attacks against creative professionals or organizations relying on Adobe InCopy for document collaboration and publishing workflows.

The vulnerability poses a significant risk to organizations using affected Adobe InCopy versions by enabling attackers to execute arbitrary code with user-level privileges. This can lead to data theft, unauthorized modification of documents, installation of malware, or disruption of publishing workflows. Since InCopy is widely used in media, publishing, and creative industries, exploitation could result in intellectual property theft or operational downtime. The requirement for user interaction limits mass exploitation but does not eliminate risk, especially in spear-phishing or targeted attack scenarios. The compromise of user accounts could serve as a foothold for lateral movement within corporate networks. The absence of known exploits currently reduces immediate risk but also underscores the need for proactive mitigation before active exploitation emerges.

Organizations should monitor Adobe's security advisories closely and apply patches or updates as soon as they become available. Until patches are released, users should be advised to avoid opening InCopy files from untrusted or unknown sources. Implementing email filtering and attachment scanning can reduce the risk of malicious files reaching end users. Employ application whitelisting and endpoint detection and response (EDR) solutions to detect and block suspicious behaviors related to InCopy processes. User education on the risks of opening unsolicited files is critical. Network segmentation can limit the impact of a compromised user account. Additionally, consider running Adobe InCopy with the least privileges necessary and enable operating system-level protections such as Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) to mitigate exploitation attempts.