CVE-2025-64615 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM), specifically affecting versions 6.5.23 and earlier. The vulnerability arises due to insufficient sanitization of user-supplied input in certain form fields, allowing a low-privileged attacker to inject malicious JavaScript code that is persistently stored on the server. When legitimate users access the affected pages containing these vulnerable fields, the injected scripts execute within their browsers under the context of the trusted domain. This can lead to unauthorized actions such as session hijacking, theft of sensitive information, or manipulation of displayed content. The vulnerability has a CVSS 3.1 base score of 5.4, indicating medium severity, with the vector AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. This means the attack can be performed remotely over the network with low attack complexity, requires low privileges, and user interaction is necessary. The scope is changed, indicating that the vulnerability can affect resources beyond the initially vulnerable component. Confidentiality and integrity impacts are low, while availability is not affected. No patches or exploit code are currently publicly available, and no known exploits in the wild have been reported. Adobe Experience Manager is widely used by enterprises for managing digital content and customer experiences, making this vulnerability relevant for organizations relying on AEM for their web presence and digital services.

For European organizations, this vulnerability poses a risk primarily to the confidentiality and integrity of user sessions and data handled via Adobe Experience Manager portals. Attackers exploiting this flaw could steal session cookies, enabling impersonation of legitimate users, or manipulate web content to mislead users or conduct phishing attacks. This can lead to data breaches, loss of user trust, and potential regulatory non-compliance under GDPR if personal data is compromised. Since AEM is often used by large enterprises, government agencies, and public sector organizations in Europe for critical digital services, exploitation could disrupt business operations and damage reputations. The requirement for user interaction and low privileges reduces the likelihood of widespread automated exploitation but targeted attacks against high-value users or administrators remain a concern. The vulnerability does not impact availability, so denial-of-service is not a direct consequence. However, the potential for lateral movement or further exploitation following session hijacking could increase overall risk.

European organizations should implement a multi-layered mitigation approach: 1) Monitor Adobe's official channels for patches addressing CVE-2025-64615 and apply updates promptly once available. 2) Until patches are released, implement strict input validation and sanitization on all form fields within AEM to block malicious script injection. 3) Deploy and enforce Content Security Policies (CSP) that restrict the execution of inline scripts and limit sources of executable code to trusted domains. 4) Utilize web application firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting AEM. 5) Conduct regular security audits and penetration testing focusing on input handling and script injection vectors in AEM deployments. 6) Educate users and administrators about the risks of interacting with suspicious content and encourage cautious behavior. 7) Implement robust session management practices, including HttpOnly and Secure cookie flags, to reduce session hijacking impact. 8) Monitor logs for unusual activity indicative of attempted exploitation and respond swiftly to incidents. These steps go beyond generic advice by focusing on compensating controls and proactive detection in the absence of immediate patches.