CVE-2025-64808 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. This vulnerability arises from insufficient sanitization of user 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 these fields, the malicious script executes in their browsers within the security context of the vulnerable AEM instance. The attack vector is network-based, requiring the attacker to submit crafted input through vulnerable forms, which then gets stored and served to victims. The vulnerability impacts confidentiality and integrity by potentially enabling session hijacking, credential theft, or unauthorized actions performed on behalf of the victim. The CVSS 3.1 base score of 5.4 reflects a medium severity, with an attack vector of network (AV:N), low attack complexity (AC:L), requiring low privileges (PR:L), and user interaction (UI:R). The scope is changed (S:C), indicating that the vulnerability affects resources beyond the initially vulnerable component. No known exploits have been reported in the wild as of the publication date, but the presence of stored XSS in a widely used content management system poses a significant risk if weaponized. Adobe has not yet released a patch or mitigation guidance, so organizations must rely on compensating controls. Stored XSS vulnerabilities are particularly dangerous in enterprise environments because they can affect multiple users and lead to widespread compromise if exploited effectively.

For European organizations, the impact of CVE-2025-64808 can be significant, especially for those relying on Adobe Experience Manager for web content management and digital experience delivery. Exploitation could lead to theft of user credentials, session tokens, or other sensitive information, enabling attackers to impersonate users or escalate privileges. This may result in unauthorized access to internal systems, data leakage, or defacement of public-facing websites, damaging organizational reputation and customer trust. Since AEM is often used by government agencies, financial institutions, and large enterprises in Europe, the confidentiality and integrity of critical information could be compromised. The vulnerability's requirement for user interaction limits automated exploitation but does not eliminate risk, particularly in environments with high user traffic or where social engineering can be leveraged. The absence of known exploits currently reduces immediate risk but does not preclude future attacks. The medium severity score suggests moderate urgency; however, the potential for chained attacks or exploitation in combination with other vulnerabilities could elevate the threat level. Organizations must consider the regulatory implications under GDPR if personal data is exposed through exploitation.

To mitigate CVE-2025-64808, European organizations should implement the following specific measures: 1) Apply any available Adobe patches or updates immediately once released. 2) Conduct a thorough audit of all form fields and input points in Adobe Experience Manager to identify and sanitize user inputs rigorously, employing server-side validation and output encoding to prevent script injection. 3) Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers, reducing the impact of potential XSS payloads. 4) Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious input patterns targeting AEM forms. 5) Educate users and administrators about the risks of clicking on untrusted links or submitting data to unknown sources to reduce the likelihood of social engineering exploitation. 6) Monitor logs and user activity for unusual behavior indicative of XSS exploitation attempts. 7) Segment and isolate critical AEM instances to limit the scope of potential compromise. 8) Engage in regular security testing, including automated scanning and manual penetration testing focused on XSS vulnerabilities. These targeted actions go beyond generic advice by focusing on the specific nature of stored XSS in AEM environments.