CVE-2025-64581 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 persistently stored on the server. When other users access the affected pages containing the malicious payload, the injected script executes in their browsers within the context of the vulnerable site. The vulnerability is classified under CWE-79, indicating a classic XSS flaw. The CVSS 3.1 base score is 5.4, reflecting medium severity with the vector AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. This means the attack can be launched remotely over the network with low attack complexity and requires low privileges and user interaction. The scope is changed (S:C), indicating that the vulnerability can affect resources beyond the initially vulnerable component, potentially impacting user sessions or data. The impact on confidentiality and integrity is limited but non-negligible, as malicious scripts can steal session tokens, perform actions on behalf of users, or deface content. Availability is not affected. No patches are currently linked, and no known exploits have been reported in the wild, but the vulnerability is publicly disclosed and should be addressed promptly. The vulnerability affects organizations using AEM for web content management, particularly those exposing forms to external or internal users. Attackers could leverage this to conduct phishing, session hijacking, or privilege escalation attacks within the affected environment.

For European organizations, this vulnerability poses a risk primarily to confidentiality and integrity of user sessions and data accessed via Adobe Experience Manager portals. Organizations relying on AEM for public websites, intranets, or customer portals may face risks of session hijacking, unauthorized actions performed in the context of authenticated users, or defacement of web content. This can lead to reputational damage, data leakage, and potential compliance issues under GDPR if personal data is compromised. The medium CVSS score indicates moderate risk, but the stored nature of the XSS increases the attack surface since multiple users can be affected once the malicious script is stored. The requirement for low privileges to inject the script means insider threats or compromised low-level accounts could exploit this vulnerability. The need for user interaction (visiting the affected page) limits automated exploitation but does not eliminate risk, especially in targeted spear-phishing or social engineering campaigns. The absence of known exploits in the wild suggests limited active exploitation currently, but the public disclosure increases the likelihood of future exploitation attempts.

1. Monitor Adobe's official security advisories and apply patches or updates for Adobe Experience Manager as soon as they become available to address CVE-2025-64581. 2. Implement strict input validation and sanitization on all form fields to prevent injection of malicious scripts. Use server-side validation in addition to client-side checks. 3. Employ output encoding/escaping techniques when rendering user-supplied data in web pages to neutralize potentially malicious content. 4. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 5. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including XSS, to identify and remediate weaknesses proactively. 6. Educate users and administrators about the risks of XSS and the importance of cautious interaction with untrusted content or links. 7. Limit privileges of users who can submit content to the minimum necessary to reduce the risk of malicious input injection. 8. Consider implementing Web Application Firewalls (WAFs) with rules designed to detect and block XSS payloads targeting AEM environments.