CVE-2025-64841 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. This vulnerability allows a low-privileged attacker to inject malicious JavaScript code into form fields that are stored and later rendered in web pages viewed by other users. When a victim accesses a page containing the malicious script, the script executes in their browser context, potentially allowing the attacker to steal session cookies, perform actions on behalf of the victim, or manipulate page content. The vulnerability is classified under CWE-79, indicating improper neutralization of input during web page generation. The CVSS v3.1 base score is 5.4, reflecting a network attack vector (AV:N), low attack complexity (AC:L), requiring low privileges (PR:L) and user interaction (UI:R), with a scope change (S:C) and limited impact on confidentiality and integrity (C:L, I:L), but no impact on availability (A:N). No public exploits have been reported yet, but the vulnerability's presence in widely used AEM versions makes it a notable risk. Adobe has not yet published patches or mitigation instructions, so organizations must rely on interim controls. The vulnerability's exploitation could lead to session hijacking, unauthorized actions, or defacement, impacting the trustworthiness of affected web applications.

For European organizations, the impact of CVE-2025-64841 can be significant, especially for those relying on Adobe Experience Manager for managing digital content and customer-facing portals. Exploitation could lead to unauthorized access to user sessions, data leakage, or manipulation of web content, undermining user trust and potentially violating data protection regulations such as GDPR. The confidentiality and integrity of user data and interactions are at risk, which could result in reputational damage and legal consequences. Since AEM is often used by government agencies, financial institutions, and large enterprises in Europe, successful exploitation could disrupt critical services or lead to targeted attacks against high-value users. The requirement for user interaction and low privileges lowers the barrier for attackers, increasing the likelihood of phishing or social engineering campaigns to trigger the vulnerability. Although availability is not directly impacted, the indirect effects on service reliability and user confidence could be substantial.

To mitigate CVE-2025-64841, European organizations should implement multiple layers of defense beyond waiting for official patches. First, apply strict input validation and sanitization on all form fields to prevent injection of malicious scripts. Use robust output encoding techniques when rendering user-supplied data in web pages to neutralize potential XSS payloads. Deploy a strong Content Security Policy (CSP) that restricts the execution of inline scripts and limits sources of executable code. Limit user privileges for content submission to reduce the risk posed by low-privileged attackers. Monitor web application logs for suspicious input patterns or repeated attempts to inject scripts. Educate users about the risks of interacting with untrusted content and encourage cautious browsing behavior. If possible, isolate or sandbox vulnerable components to contain potential exploitation. Finally, maintain close communication with Adobe for timely updates and apply patches as soon as they become available.