CVE-2025-64604 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. Stored XSS occurs when malicious scripts are permanently stored on a target server, such as within form fields, and later executed in the browsers of users who access the affected content. In this case, a low-privileged attacker can inject JavaScript payloads into vulnerable form fields within AEM. When other users browse pages containing these fields, the injected scripts execute in their browsers, potentially allowing attackers to steal session cookies, perform actions on behalf of the user, or manipulate displayed content. The vulnerability has a CVSS 3.1 base score of 5.4, indicating medium severity. The vector metrics indicate the attack can be performed remotely over the network (AV:N), requires low attack complexity (AC:L), needs 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 but not availability. No known exploits have been reported in the wild, and no official patches have been linked at the time of publication. Adobe Experience Manager is widely used by enterprises for web content management and digital experience delivery, making this vulnerability relevant to organizations that rely on AEM for their web presence. Attackers exploiting this vulnerability could compromise user sessions or deface websites, leading to reputational damage and potential data breaches.

For European organizations using Adobe Experience Manager, this vulnerability poses a risk of session hijacking, unauthorized actions performed on behalf of users, and potential data leakage through malicious script execution. The confidentiality of user data and integrity of web content can be compromised, impacting customer trust and regulatory compliance, especially under GDPR. While availability is not directly affected, the reputational damage from defacement or data theft can have indirect business impacts. Organizations in sectors such as finance, government, healthcare, and e-commerce that rely heavily on AEM for customer-facing applications are particularly at risk. The requirement for user interaction and low privileges means attackers could exploit this vulnerability through social engineering or by targeting less privileged users to inject malicious scripts. The absence of known exploits currently reduces immediate risk but does not eliminate the threat, as attackers may develop exploits once the vulnerability details become widely known.

To mitigate CVE-2025-64604, European organizations should implement the following specific measures: 1) Apply strict input validation and sanitization on all form fields within Adobe Experience Manager to prevent injection of malicious scripts. 2) Use context-aware output encoding to ensure that any user-supplied data rendered in web pages is safely escaped. 3) Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 4) Monitor web application logs and user activity for unusual behavior indicative of XSS exploitation attempts. 5) Restrict privileges for users who can submit content to the minimum necessary to limit the attack surface. 6) Stay updated with Adobe security advisories and apply patches promptly once available. 7) Conduct regular security assessments and penetration testing focused on web application vulnerabilities. 8) Educate users and administrators about the risks of XSS and safe content handling practices. These steps go beyond generic advice by focusing on secure coding practices, proactive monitoring, and privilege management tailored to the AEM environment.