CVE-2025-29316 is a vulnerability identified in the DataPatrol Screenshot watermark and printing watermark agent version 3.5.2.0. The issue allows a physically proximate attacker to obtain sensitive information by bypassing watermark protections intended to secure printed or screenshot content. The vulnerability revolves around the watermarking mechanism, which hooks into the operating system's printing process to add watermarks to print jobs and screenshots. However, the supplier disputes the claims of watermark bypass, arguing that the watermark is not meant to be visible during on-screen preview of generated printouts and that the screenshot watermark bypass can be mitigated by disabling Developer Tools via Active Directory Group Policy. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information) and has a CVSS v3.1 base score of 6.2, indicating a medium severity level. The attack vector is local (physically proximate attacker), requiring no privileges or user interaction, and impacts confidentiality without affecting integrity or availability. No patches or known exploits in the wild have been reported as of the publication date (April 17, 2025).

For European organizations, this vulnerability poses a risk primarily to confidentiality, as sensitive information intended to be protected by watermarking could be exposed to unauthorized individuals physically near the affected systems. Organizations that rely on DataPatrol's watermarking solution to secure printed documents or screenshots containing confidential or regulated data (e.g., financial institutions, healthcare providers, government agencies) may face data leakage risks. Although exploitation requires physical proximity, environments with shared workspaces, public access areas, or insufficient physical security controls could be vulnerable. The inability to reliably watermark printouts or screenshots undermines data loss prevention strategies and could lead to unauthorized data disclosure, regulatory non-compliance (e.g., GDPR), and reputational damage. The supplier's mitigation via Group Policy settings suggests that organizations not enforcing these policies may be more exposed. The absence of known exploits reduces immediate risk but does not eliminate the potential for future exploitation.

European organizations using DataPatrol Screenshot watermark and printing watermark agent should implement the following specific mitigations: 1) Enforce strict physical security controls to limit unauthorized physical access to systems where watermarking is critical. 2) Apply Group Policy settings to disallow Developer Tools as recommended by the supplier to prevent screenshot watermark bypass. 3) Conduct audits to verify that watermarking is functioning as intended on print jobs and screenshots, including testing preview and actual print outputs. 4) Monitor for any updates or patches from the vendor addressing this vulnerability and apply them promptly once available. 5) Consider complementary data loss prevention (DLP) solutions that do not solely rely on watermarking for sensitive information protection. 6) Train staff on the risks of physical proximity attacks and the importance of safeguarding sensitive printed materials. 7) Review and update information security policies to include controls for physical and endpoint security related to printing and screenshotting sensitive data.