CVE-2025-64544 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 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 a low privileged attacker to craft a malicious URL or manipulate a web page, which then must be visited or interacted with by the victim user. Upon successful exploitation, the attacker can execute arbitrary JavaScript, potentially leading to theft of sensitive information such as session cookies, credentials, or other data accessible in the browser context. The vulnerability does not directly impact system availability but compromises confidentiality and integrity. The CVSS 3.1 base score is 5.4, reflecting medium severity, with attack vector Network (remote), low attack complexity, low privileges required, and user interaction necessary. The scope is changed (S:C), indicating the vulnerability can affect resources beyond the vulnerable component. No patches were listed at the time of publication, and no known exploits in the wild have been reported. The vulnerability is categorized under CWE-79, a common web application security weakness. Given AEM's widespread use in enterprise content management, this vulnerability poses a risk to organizations relying on AEM for web content delivery.

For European organizations, the impact of CVE-2025-64544 can be significant, particularly for those using Adobe Experience Manager to manage public-facing websites or intranet portals. Successful exploitation can lead to unauthorized disclosure of sensitive user information, session hijacking, and potential further compromise of user accounts or internal systems. This can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR breaches due to data leakage), and result in financial losses. Since exploitation requires user interaction, phishing or social engineering campaigns could be used to increase attack success rates. The medium severity indicates that while the vulnerability is not critical, it still poses a tangible risk, especially in environments with high-value targets or sensitive data. The lack of known exploits currently provides a window for proactive mitigation. However, the widespread deployment of AEM in Europe, especially in sectors like government, finance, and media, increases the potential attack surface and impact.

1. Apply official Adobe patches or updates as soon as they become available to address CVE-2025-64544. 2. Implement strict Content Security Policies (CSP) to restrict the execution of untrusted scripts and reduce the impact of XSS attacks. 3. Sanitize and validate all user inputs and URL parameters rigorously within AEM components to prevent injection of malicious scripts. 4. Employ web application firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting AEM. 5. Educate users and administrators about the risks of interacting with suspicious links or web content, emphasizing caution with unsolicited URLs. 6. Conduct regular security assessments and penetration testing focused on web application vulnerabilities, including DOM-based XSS. 7. Monitor logs and network traffic for unusual activities that could indicate exploitation attempts. 8. Consider isolating or segmenting AEM instances to limit the scope of potential compromise. These measures, combined, will reduce the likelihood and impact of exploitation beyond generic advice.