CVE-2025-64582 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 not properly sanitized or encoded. When a victim user accesses a page containing the injected content, the malicious script executes within their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability is classified under CWE-79, indicating improper neutralization of input during web page generation. The CVSS v3.1 base score of 5.4 reflects that the attack vector is network-based (AV:N), requires 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 poses a moderate risk due to the widespread use of AEM in enterprise content management. The lack of available patches at the time of publication necessitates immediate mitigation efforts by affected organizations. The vulnerability's exploitation could allow attackers to bypass access controls and execute arbitrary scripts in the context of users’ browsers, potentially compromising sensitive information or enabling further attacks within the affected environment.

For European organizations, the impact of CVE-2025-64582 can be significant, especially for those relying on Adobe Experience Manager for managing web content and digital experiences. Exploitation could lead to unauthorized disclosure of sensitive information, session hijacking, and potential lateral movement within corporate networks. This can undermine user trust and lead to reputational damage, regulatory penalties under GDPR if personal data is compromised, and operational disruptions. Given that AEM is widely used by government agencies, financial institutions, and large enterprises across Europe, the risk extends to critical sectors. The vulnerability’s requirement for user interaction and low privilege reduces the likelihood of widespread automated exploitation but does not eliminate targeted attacks against high-value users or administrators. The scope change in the CVSS vector indicates that the attack could affect resources beyond the initially vulnerable component, increasing potential damage. Organizations failing to address this vulnerability may face increased risk of phishing, malware distribution, or unauthorized access through compromised user sessions.

To mitigate CVE-2025-64582, European organizations should implement the following specific measures: 1) Apply official Adobe patches immediately once released; monitor Adobe security advisories closely. 2) Implement strict input validation and sanitization on all form fields to prevent injection of malicious scripts. 3) Use output encoding techniques such as context-aware HTML entity encoding to neutralize any injected content before rendering. 4) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 5) Conduct regular security assessments and penetration testing focused on web application input handling. 6) Educate users about the risks of interacting with suspicious content and encourage cautious browsing behavior. 7) Monitor web server and application logs for unusual input patterns or repeated attempts to exploit form fields. 8) Consider deploying Web Application Firewalls (WAF) with rules tailored to detect and block XSS payloads targeting AEM. 9) Limit privileges of users who can submit content to reduce the attack surface. 10) Isolate critical AEM instances and restrict access to trusted networks to minimize exposure.