CVE-2025-64579 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. Stored XSS occurs when an attacker is able to inject malicious scripts into a web application’s persistent data store, which are then served to other users without proper sanitization. In this case, the vulnerability resides in vulnerable form fields within AEM, which can be exploited by a low-privileged attacker to insert arbitrary JavaScript code. When a victim user accesses the affected page containing the malicious payload, the script executes in their browser context, potentially allowing theft of session tokens, manipulation of page content, or redirection to malicious sites. The vulnerability has a CVSS v3.1 base score of 5.4, indicating medium severity. The attack vector is network-based (remote), with low attack complexity, requiring low privileges but user interaction (the victim must visit the compromised page). The scope is changed, meaning the vulnerability can affect resources beyond the vulnerable component. Confidentiality and integrity impacts are low, while availability is not affected. No public exploits have been reported yet, but the presence of stored XSS in a widely used enterprise content management system poses a significant risk for phishing, session hijacking, and defacement attacks. The lack of available patches at the time of publication necessitates immediate mitigation steps by administrators.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Adobe Experience Manager to deliver digital content and customer experiences. Exploitation could lead to unauthorized disclosure of sensitive information such as session cookies or personal data, enabling account takeover or further attacks. Integrity of displayed content can be compromised, damaging brand reputation and user trust. Attackers could also use the vulnerability to conduct phishing campaigns by injecting deceptive content or redirecting users to malicious sites. While availability is not directly impacted, the indirect effects of compromised user trust and potential regulatory consequences under GDPR for data breaches could be severe. Organizations in sectors such as finance, government, healthcare, and e-commerce, which heavily use AEM for their web presence, are particularly at risk. The medium severity rating suggests that while the vulnerability is not critical, it should be addressed promptly to prevent exploitation.

1. Apply official Adobe patches or updates as soon as they become available for Adobe Experience Manager 6.5.23 and earlier versions. 2. Implement strict input validation and output encoding on all form fields to prevent injection of malicious scripts. Use context-aware encoding libraries recommended by Adobe. 3. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 4. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including XSS. 5. Monitor web application logs and user reports for signs of suspicious script injections or unusual user behavior. 6. Educate end users and administrators about the risks of XSS and phishing attacks, emphasizing cautious behavior when interacting with web content. 7. Consider implementing Web Application Firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting AEM. 8. Limit privileges of users who can submit data to vulnerable form fields to reduce the attack surface. 9. Review and harden AEM configurations to disable unnecessary features or components that may increase exposure.