CVE-2025-64543 is a DOM-based Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. This vulnerability arises from improper handling of untrusted data within the Document Object Model (DOM) in the web application, allowing an attacker to inject malicious scripts that execute in the context of the victim's browser. The attack vector requires a low-privileged attacker to craft a malicious URL or manipulate a web page that, when visited or interacted with by a user, triggers the execution of arbitrary JavaScript code. This can lead to theft of sensitive information such as session cookies, user credentials, or other confidential data accessible within the browser context. The vulnerability has a CVSS 3.1 base score of 5.4, reflecting medium severity, with attack vector being network-based, low attack complexity, requiring low privileges but user interaction, and impacting confidentiality and integrity but not availability. No patches or exploit code are currently publicly available, and no known exploits have been reported in the wild. Adobe Experience Manager is widely used by enterprises for managing digital content and customer experiences, making this vulnerability significant for organizations relying on AEM for their web presence. The vulnerability's exploitation scope is limited by the need for user interaction, but the potential impact on confidentiality and integrity of user data is notable. The vulnerability is classified under CWE-79, which covers Cross-Site Scripting issues.

For European organizations, the impact of CVE-2025-64543 can be significant, particularly for those using Adobe Experience Manager to deliver web content and digital services. Successful exploitation can lead to unauthorized access to user session data, credential theft, and potential impersonation of legitimate users, undermining trust and potentially leading to data breaches. This can affect customer privacy, regulatory compliance (such as GDPR), and brand reputation. Since AEM is often used by government agencies, financial institutions, and large enterprises in Europe, the risk extends to critical sectors where data confidentiality and integrity are paramount. Although the vulnerability does not affect system availability, the compromise of user data and session integrity can facilitate further attacks, including privilege escalation or lateral movement within networks. The requirement for user interaction limits mass exploitation but targeted phishing or social engineering campaigns could increase risk. Additionally, the shared responsibility model in cloud deployments of AEM means that both Adobe and customers must coordinate remediation efforts.

1. Monitor Adobe’s official channels for patches addressing CVE-2025-64543 and apply them promptly once released. 2. Until patches are available, implement strict Content Security Policies (CSP) to restrict the execution of unauthorized scripts and reduce the attack surface. 3. Conduct thorough input validation and sanitization on all user-controllable inputs within AEM to prevent injection of malicious scripts into the DOM. 4. Employ web application firewalls (WAFs) with updated signatures to detect and block suspicious payloads targeting this vulnerability. 5. Educate end-users and administrators about the risks of interacting with unsolicited or suspicious URLs to reduce the likelihood of successful social engineering. 6. Review and harden AEM configurations, disabling unnecessary features or components that could be exploited. 7. Implement multi-factor authentication (MFA) for administrative access to limit the impact of compromised user sessions. 8. Regularly audit logs and monitor for anomalous activities that may indicate exploitation attempts. 9. For cloud deployments, coordinate with Adobe support to ensure timely updates and security best practices are followed.