CVE-2025-64566 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) of web pages served by AEM, 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, making social engineering a key component of exploitation. The vulnerability is classified under CWE-79, indicating it is a classic XSS flaw. The CVSS 3.1 base score of 5.4 reflects that the attack can be launched remotely (AV:N), requires low attack complexity (AC:L), low privileges (PR:L), and user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality and integrity to a limited extent (C:L, I:L) but does not impact availability (A:N). Exploitation could lead to theft of sensitive session tokens, user impersonation, or unauthorized actions performed on behalf of the user. No patches are currently linked, and no known exploits have been reported in the wild as of the publication date. Given Adobe Experience Manager's widespread use in enterprise content management, especially in sectors like government, finance, and media, this vulnerability poses a tangible risk to organizations relying on AEM for web content delivery and management.

For European organizations, the impact of CVE-2025-64566 can be significant in terms of confidentiality breaches and potential integrity violations. Attackers exploiting this vulnerability could steal session cookies or authentication tokens, leading to unauthorized access to sensitive internal portals or administrative interfaces. This could result in data leakage, unauthorized content modification, or further lateral movement within the network. Although availability is not directly affected, the reputational damage and compliance risks (e.g., GDPR violations due to data exposure) could be substantial. Organizations in sectors with high regulatory scrutiny, such as finance, healthcare, and public administration, may face increased legal and financial consequences. The requirement for user interaction limits mass exploitation but targeted spear-phishing campaigns could be effective. The vulnerability also increases the attack surface for phishing and social engineering attacks, which are prevalent in Europe. Without timely mitigation, attackers could leverage this flaw to compromise user trust and organizational security posture.

1. Apply official patches from Adobe as soon as they become available to address the vulnerability directly. 2. Implement strict input validation and sanitization on all user-controllable inputs within AEM to prevent malicious script injection. 3. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential XSS attacks. 4. Conduct regular security audits and code reviews focusing on client-side scripting and DOM manipulation within AEM implementations. 5. Educate end-users and administrators about the risks of interacting with suspicious URLs or web content, emphasizing phishing awareness. 6. Use web application firewalls (WAFs) with updated rules to detect and block common XSS attack patterns targeting AEM. 7. Monitor logs and user activity for unusual behavior that could indicate exploitation attempts. 8. Segment and restrict access to AEM administrative interfaces to minimize exposure. 9. Consider implementing multi-factor authentication (MFA) to reduce the impact of stolen credentials resulting from XSS attacks.