CVE-2025-64887 is a DOM-based Cross-Site Scripting vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. This vulnerability arises from improper handling of user-controllable input within the Document Object Model (DOM), allowing an attacker to inject malicious scripts that execute in the context of the victim's browser. The attack vector requires the victim to interact with a crafted URL or manipulated web page, which triggers the execution of the injected script. Because the vulnerability is DOM-based, the malicious payload is executed client-side without server-side code injection. The attacker needs only low privileges and user interaction to exploit this issue. The impact includes potential theft of sensitive information such as cookies, session tokens, or other browser-stored data, as well as the ability to perform actions on behalf of the victim within the affected web application. The CVSS 3.1 base score of 5.4 reflects a medium severity, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), low privileges required (PR:L), user interaction required (UI:R), scope changed (S:C), and limited confidentiality and integrity impacts (C:L/I:L) with no availability impact (A:N). No patches are currently linked, and no known exploits have been reported in the wild, suggesting the vulnerability is newly disclosed. The vulnerability is classified under CWE-79, which covers Cross-Site Scripting issues. Given Adobe Experience Manager's role as a widely used enterprise content management system, exploitation could affect the confidentiality and integrity of user sessions and data within affected organizations.

For European organizations, the exploitation of CVE-2025-64887 could lead to unauthorized disclosure of sensitive information such as authentication tokens, personal data, or internal content managed via Adobe Experience Manager. This could result in session hijacking, unauthorized actions performed on behalf of users, and potential lateral movement within the organization's digital infrastructure. While the vulnerability does not directly compromise system availability or allow remote code execution on servers, the theft of credentials or session information could facilitate further attacks. Organizations in sectors relying heavily on digital customer engagement platforms—such as finance, government, healthcare, and e-commerce—may face reputational damage and regulatory consequences under GDPR if personal data is exposed. The requirement for user interaction limits mass exploitation but targeted phishing or social engineering campaigns could increase risk. The medium severity score suggests moderate risk, but the widespread use of AEM in Europe elevates the potential impact.

1. Monitor Adobe’s official channels for patches addressing CVE-2025-64887 and apply updates promptly once available. 2. Implement strict input validation and output encoding on all user-controllable inputs within AEM to prevent injection of malicious scripts into the DOM. 3. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 4. Conduct regular security audits and penetration testing focused on client-side vulnerabilities in web applications. 5. Educate end-users and administrators about phishing and social engineering tactics that could lead to exploitation via crafted URLs. 6. Use web application firewalls (WAFs) with rules tailored to detect and block suspicious script injection attempts targeting AEM. 7. Limit the exposure of AEM administrative interfaces and restrict access based on least privilege principles. 8. Review and harden session management mechanisms to detect and prevent session hijacking attempts. 9. Employ browser security features such as HTTPOnly and Secure flags on cookies to mitigate theft via XSS. 10. Maintain comprehensive logging and monitoring to detect anomalous activities that could indicate exploitation attempts.