CVE-2025-64797 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. The vulnerability arises from insufficient sanitization of user-supplied input in certain form fields, allowing a low-privileged attacker to inject malicious JavaScript code that is stored persistently on the server. When other users access the affected pages containing the injected scripts, the malicious code executes in their browsers within the security context of the vulnerable site. This can lead to theft of session cookies, user impersonation, unauthorized actions, or manipulation of displayed content. The vulnerability requires the attacker to have low-level privileges to submit data and relies on user interaction to trigger the script execution. The CVSS 3.1 base score of 5.4 reflects a medium severity, with attack vector being network, low attack complexity, requiring privileges and user interaction, and impacting confidentiality and integrity but not availability. No patches or exploits are currently publicly available, but the vulnerability is officially published and should be addressed promptly. Adobe Experience Manager is widely used by enterprises for web content management, making this vulnerability a significant risk for organizations relying on AEM to deliver digital experiences.

For European organizations, the impact of this vulnerability can be significant, especially for those using Adobe Experience Manager to manage customer-facing websites and portals. Exploitation could lead to unauthorized access to sensitive user data, session hijacking, and manipulation of web content, undermining user trust and potentially violating data protection regulations such as GDPR. The confidentiality and integrity of user data are at risk, which could result in reputational damage and legal consequences. Since AEM is often used by large enterprises, government agencies, and public institutions in Europe, successful exploitation could disrupt digital services and lead to targeted phishing or social engineering campaigns leveraging the compromised web pages. The medium severity score indicates moderate risk, but the widespread use of AEM in Europe elevates the importance of timely mitigation.

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 form fields to prevent injection of malicious scripts. 3. Use output encoding techniques to ensure that any user-supplied data rendered in web pages is treated as data, not executable code. 4. Deploy a robust Content Security Policy (CSP) to restrict the execution of unauthorized scripts and reduce the impact of potential XSS attacks. 5. Monitor web application logs and user activity for unusual behavior indicative of exploitation attempts. 6. Educate developers and administrators on secure coding practices and the risks associated with XSS vulnerabilities. 7. Consider using web application firewalls (WAFs) with rules designed to detect and block XSS payloads targeting AEM. 8. Limit privileges of users who can submit data to vulnerable forms to reduce the attack surface. 9. Conduct regular security assessments and penetration testing focused on web application vulnerabilities.