CVE-2025-64551 identifies a DOM-based Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager (AEM), specifically affecting versions 6.5.23 and earlier. DOM-based XSS occurs when client-side scripts write untrusted data to the Document Object Model (DOM) without proper sanitization, allowing attackers to inject malicious JavaScript that executes in the victim's browser context. In this case, a low-privileged attacker can craft a malicious URL or manipulate web page content to exploit this vulnerability. The attack requires user interaction, such as clicking a link or visiting a malicious page, to trigger script execution. The vulnerability impacts confidentiality and integrity by enabling theft of session tokens, cookies, or other sensitive information, and potentially altering client-side logic. The CVSS 3.1 score of 5.4 reflects network attack vector, low attack complexity, low privileges required, and user interaction needed, with a scope change indicating that the vulnerability could affect components beyond the initially vulnerable module. No patches or known exploits are currently reported, but the vulnerability is publicly disclosed and should be addressed promptly. Adobe Experience Manager is widely used for content management in enterprise environments, making this vulnerability relevant for organizations relying on AEM for web content delivery and digital experience management.

For European organizations, the impact of CVE-2025-64551 can be significant in terms of data confidentiality and user trust. Successful exploitation could lead to session hijacking, unauthorized access to sensitive information, and potential defacement or manipulation of web content. This is particularly critical for sectors such as finance, government, healthcare, and e-commerce, where AEM is used to manage customer-facing portals and internal web applications. The requirement for user interaction somewhat limits automated exploitation, but targeted phishing campaigns could increase risk. Additionally, compromised client browsers could be used as a foothold for further attacks within an organization's network. The medium severity rating suggests a moderate risk, but the widespread use of AEM in Europe means that many organizations could be exposed if patches are not applied promptly. The vulnerability could also affect compliance with GDPR if personal data is exposed through XSS attacks.

1. Apply official Adobe patches or updates for AEM as soon as they become available to address CVE-2025-64551. 2. Implement strict input validation and output encoding on all user-controllable inputs within AEM to prevent injection of malicious scripts into the DOM. 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 assessments and penetration testing focused on client-side vulnerabilities in web applications. 5. Educate users and administrators about the risks of phishing and social engineering attacks that could trigger this vulnerability. 6. Monitor web traffic and logs for unusual activity or attempts to exploit XSS vectors. 7. Consider using web application firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting AEM. 8. Review and harden AEM configurations to minimize exposure of vulnerable components and reduce attack surface.