CVE-2025-64852 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM), specifically affecting versions 6.5.23 and earlier. Stored XSS occurs when malicious input is saved on the server and later rendered in users' browsers without proper sanitization or encoding. In this case, low-privileged attackers can exploit vulnerable form fields to inject malicious JavaScript code. When other users access the affected pages, the injected scripts execute in their browsers within the security context of the vulnerable site. This can lead to theft of sensitive information such as session cookies, user credentials, or manipulation of displayed content, potentially facilitating further attacks like session hijacking or phishing. The vulnerability requires the attacker to have some level of access to submit data (low privilege) and relies on user interaction (visiting the compromised page). The CVSS 3.1 base score of 5.4 reflects a medium severity, with attack vector network (remote), low attack complexity, low privileges required, and user interaction needed. The scope is changed, indicating that the vulnerability can affect resources beyond the initially vulnerable component. No public exploits are known at this time, but the presence of this vulnerability in a widely used enterprise content management system makes it a notable risk. Adobe has not yet released patches, so organizations must rely on interim mitigations. Since AEM is commonly used by enterprises for managing digital content and customer experiences, exploitation could impact confidentiality and integrity of user data and site content, though availability is not affected.

For European organizations, the impact of CVE-2025-64852 can be significant, especially for those relying on Adobe Experience Manager for web content and digital experience management. Exploitation could lead to unauthorized disclosure of sensitive information such as session tokens, enabling attackers to impersonate users or administrators. This can result in data breaches, loss of customer trust, and potential regulatory penalties under GDPR due to compromised personal data. Integrity of website content can also be affected, allowing attackers to inject misleading or malicious content, which could damage brand reputation or facilitate phishing attacks targeting European users. While availability is not directly impacted, the indirect effects of compromised integrity and confidentiality can disrupt business operations and customer interactions. Organizations in sectors such as finance, government, healthcare, and e-commerce, which heavily use AEM, may face elevated risks. The medium severity score suggests that while the threat is not critical, it requires timely attention to prevent exploitation, especially given the widespread use of AEM in Europe.

1. Monitor Adobe’s official channels for patches addressing CVE-2025-64852 and apply them promptly once released. 2. Until patches are available, implement strict input validation on all form fields to reject or sanitize potentially malicious scripts. 3. Employ output encoding techniques to ensure that user-supplied data is safely rendered in HTML contexts, preventing script execution. 4. Configure Content Security Policy (CSP) headers to restrict the execution of inline scripts and loading of untrusted resources, mitigating the impact of injected scripts. 5. Review and restrict user privileges to minimize the number of users who can submit data to vulnerable forms, reducing attack surface. 6. Conduct security awareness training for users to recognize suspicious content and avoid interacting with untrusted inputs. 7. Use web application firewalls (WAF) with rules designed to detect and block XSS payloads targeting AEM. 8. Regularly audit and test web applications for XSS vulnerabilities using automated scanners and manual penetration testing. 9. Implement multi-factor authentication (MFA) to reduce the risk of session hijacking consequences. 10. Maintain comprehensive logging and monitoring to detect unusual activities indicative of exploitation attempts.