CVE-2025-64887 is a DOM-based Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. This vulnerability arises from improper handling of untrusted data within the Document Object Model (DOM) in the web application, allowing an attacker to inject malicious scripts that execute in the context of a victim's browser. The attack vector requires the victim to interact with a crafted URL or manipulated web page, making social engineering or phishing a likely exploitation method. The vulnerability is classified under CWE-79, which pertains to Cross-Site Scripting issues. The CVSS v3.1 base score is 5.4, reflecting a medium severity level, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring low privileges (PR:L), user interaction (UI:R), and a scope change (S:C). The impact affects confidentiality and integrity but not availability. No known exploits have been reported in the wild, and no official patches have been linked at the time of publication. AEM is widely used in enterprise content management, digital asset management, and web content delivery, making this vulnerability significant for organizations relying on Adobe's platform for critical web services. The DOM-based nature of the XSS means that the malicious payload is executed on the client side, potentially stealing session tokens, redirecting users, or performing unauthorized actions within the victim's browser session. Due to the requirement for user interaction, exploitation is less straightforward than reflected or stored XSS but remains a significant risk, especially in environments with high user traffic and sensitive data exposure.

For European organizations, the impact of CVE-2025-64887 can be substantial, particularly for those using Adobe Experience Manager to deliver web content for government portals, financial institutions, healthcare providers, and media companies. Successful exploitation could lead to theft of session cookies, user credentials, or sensitive information accessible through the victim's browser session, undermining confidentiality and integrity. This could facilitate further attacks such as account takeover, unauthorized transactions, or data leakage. Although availability is not directly impacted, reputational damage and regulatory consequences under GDPR could be severe if personal data is compromised. The requirement for user interaction means phishing campaigns or social engineering tactics could be leveraged to exploit this vulnerability, increasing the risk in sectors with high user engagement. The widespread use of AEM in Europe’s public and private sectors amplifies the potential attack surface, making timely mitigation critical to prevent targeted attacks that could disrupt business operations or public services.

1. Monitor Adobe’s official channels for patches or updates addressing CVE-2025-64887 and apply them promptly once available. 2. Implement strict Content Security Policies (CSP) to restrict the execution of untrusted scripts and reduce the impact of DOM-based XSS attacks. 3. Conduct thorough input validation and sanitization on all user-controllable inputs that interact with the DOM to prevent injection of malicious scripts. 4. Educate end users and administrators about the risks of phishing and social engineering attacks that could lead to exploitation via crafted URLs or manipulated web pages. 5. Employ web application firewalls (WAFs) with rules tuned to detect and block suspicious payloads or anomalous user interactions targeting AEM instances. 6. Regularly audit and review AEM configurations and custom code for insecure DOM manipulations or unsafe JavaScript practices. 7. Use browser security features such as HTTPOnly and Secure flags on cookies to limit script access to session tokens. 8. Implement multi-factor authentication (MFA) to reduce the impact of credential theft resulting from XSS exploitation. 9. Monitor logs and user behavior for signs of exploitation attempts or unusual activity related to AEM web applications.