CVE-2025-64586 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. Stored XSS vulnerabilities occur when malicious scripts submitted by an attacker are permanently stored on the target server, such as within form fields, and later executed in the browsers of users who access the affected content. In this case, a low-privileged attacker can exploit vulnerable form fields in AEM to inject arbitrary JavaScript code. When legitimate users browse pages containing these fields, the malicious script executes in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability requires the attacker to have at least low-level privileges to submit data and requires user interaction (visiting the affected page) for exploitation. The CVSS 3.1 base score of 5.4 reflects a medium severity, with attack vector being network-based, low attack complexity, privileges required, and user interaction needed. The impact affects confidentiality and integrity but not availability. No patches or exploit code are currently publicly available, and no known exploits have been observed in the wild. Adobe Experience Manager is widely used by enterprises and public sector organizations for managing digital content and customer experiences, making this vulnerability relevant for organizations relying on AEM for their web presence. The vulnerability highlights the importance of secure input validation, output encoding, and prompt patching in web content management systems.

For European organizations, the impact of this vulnerability can be significant, especially for those using Adobe Experience Manager to manage public-facing websites or intranet portals. Exploitation could lead to the execution of malicious scripts in users’ browsers, enabling attackers to steal session cookies, perform actions on behalf of users, or redirect users to malicious sites. This can result in data breaches, loss of user trust, reputational damage, and potential regulatory penalties under GDPR if personal data is compromised. The medium severity score indicates a moderate risk, but the widespread use of AEM in sectors such as government, finance, and retail in Europe increases the potential attack surface. Additionally, the stored nature of the XSS means that once injected, the malicious payload persists, increasing the likelihood of exposure to multiple users over time. While availability is not impacted, the confidentiality and integrity of user sessions and data are at risk, which can have cascading effects on organizational security posture and compliance.

1. Monitor Adobe’s official channels closely for patches addressing CVE-2025-64586 and apply them promptly once released. 2. Implement strict input validation on all form fields to reject or sanitize potentially malicious input before storage. 3. Employ robust output encoding/escaping techniques on all user-supplied content rendered in web pages to prevent script execution. 4. Use Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 5. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including XSS. 6. Educate developers and content managers on secure coding and content handling practices specific to AEM. 7. Monitor web server and application logs for unusual input patterns or repeated form submissions that may indicate exploitation attempts. 8. Consider implementing web application firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting AEM. 9. Limit privileges for users who can submit content to the minimum necessary to reduce the risk of malicious input injection. 10. Review and harden AEM configurations to disable or restrict features that may increase XSS risk.