CVE-2025-64609 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-supplied input in certain form fields, allowing an attacker with low privileges to inject malicious JavaScript code that is stored persistently on the server. When other users access the affected pages containing these fields, the injected scripts execute in their browsers within the security context of the vulnerable site. The attack vector is network-based, requiring the attacker to submit crafted input through the web interface. The vulnerability requires low privileges (PR:L) and user interaction (UI:R), meaning the victim must visit the compromised page for the exploit to succeed. The scope is changed (S:C), indicating that the vulnerability can affect resources beyond the attacker’s privileges, potentially impacting other users. The CVSS 3.1 base score is 5.4, reflecting a medium severity with limited confidentiality and integrity impact and no availability impact. No public exploits have been reported yet, but the vulnerability poses a risk of session hijacking, credential theft, or unauthorized actions performed on behalf of users. Adobe has not yet published patches or mitigations, so organizations must rely on interim controls. Given AEM’s widespread use in enterprise content management, especially in Europe, this vulnerability could be leveraged to compromise sensitive information or disrupt business operations through client-side attacks.

For European organizations, the impact of CVE-2025-64609 can be significant, particularly for those relying on Adobe Experience Manager to manage web content and digital assets. Exploitation could lead to theft of user credentials, session tokens, or other sensitive data, enabling further compromise of internal systems or user accounts. The vulnerability could also facilitate phishing attacks or the distribution of malware via trusted websites, damaging organizational reputation and customer trust. Since AEM is often used by government agencies, financial institutions, and large enterprises in Europe, successful exploitation could disrupt critical services or lead to data breaches subject to GDPR penalties. The medium severity score reflects that while the vulnerability does not directly impact availability, the confidentiality and integrity of user data and interactions are at risk. The requirement for user interaction limits the attack surface somewhat but does not eliminate the threat, especially in environments with many users or public-facing portals. Without timely patching or mitigation, attackers could leverage this vulnerability to escalate privileges or move laterally within affected networks.

1. Apply patches from Adobe as soon as they become available to address the vulnerability directly. 2. Until patches are released, implement strict input validation and sanitization on all user-supplied data in AEM forms to block malicious scripts. 3. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4. Limit user privileges on AEM forms to the minimum necessary, reducing the ability of low-privileged users to inject malicious content. 5. Monitor web application logs for unusual input patterns or repeated attempts to submit suspicious scripts. 6. Educate users about the risks of clicking on untrusted links or interacting with unknown content on corporate websites. 7. Use web application firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting AEM. 8. Conduct regular security assessments and penetration testing focused on client-side vulnerabilities in web applications. 9. Segment AEM environments to isolate critical systems and reduce potential lateral movement if exploitation occurs. 10. Review and harden browser security settings and extensions used by employees to mitigate impact of malicious scripts.