CVE-2025-64627 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 injects malicious scripts into web application fields that are permanently stored and later rendered in users' browsers. In this case, a low-privileged attacker can exploit vulnerable form fields within AEM to insert JavaScript code. When legitimate users access the affected pages, the malicious script executes in their browsers, potentially allowing the attacker to steal session cookies, perform actions on behalf of the user, or manipulate page content. The vulnerability requires the attacker to have some level of privileges to submit data and requires user interaction (visiting the compromised page). The CVSS 3.1 base score is 5.4, indicating medium severity, with the vector AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. This means the attack can be performed remotely over the network with low attack complexity, requires low privileges, and user interaction, and impacts confidentiality and integrity with a scope change. No known exploits are currently reported in the wild, and no official patches or mitigation links have been provided yet. The vulnerability is categorized under CWE-79, which is a common and well-understood web application security issue. Adobe Experience Manager is widely used by enterprises and governments for content management, making this vulnerability significant for organizations relying on AEM for their web infrastructure.

For European organizations, the impact of this vulnerability can be significant, especially for those using Adobe Experience Manager to manage public-facing websites or internal portals. Exploitation could lead to theft of sensitive information such as session tokens or credentials, unauthorized actions performed on behalf of users, and potential defacement or manipulation of web content. This can damage organizational reputation, lead to data breaches, and cause compliance issues under regulations like GDPR. Since the vulnerability requires user interaction and some privileges, the attack surface is somewhat limited but still concerning for environments where many users have access to input forms. The scope change in the CVSS vector indicates that the vulnerability could affect resources beyond the initially vulnerable component, potentially impacting other parts of the application or user sessions. The absence of known exploits in the wild suggests that organizations have a window to implement mitigations before active attacks emerge. However, the widespread use of AEM in European public and private sectors, including critical infrastructure and e-government services, increases the risk and potential impact of exploitation.

1. Implement strict input validation and sanitization on all form fields within Adobe Experience Manager to prevent injection of malicious scripts. 2. Apply Content Security Policy (CSP) headers to restrict execution of unauthorized scripts and reduce the impact of any injected code. 3. Monitor web application logs and user activity for unusual input patterns or repeated attempts to submit suspicious data. 4. Limit privileges of users who can submit data to vulnerable forms, enforcing the principle of least privilege. 5. Regularly review and update AEM configurations and custom code to ensure secure coding practices are followed. 6. Stay alert for official patches or security advisories from Adobe and apply them promptly once available. 7. Educate users about the risks of clicking on suspicious links or interacting with untrusted content within the organization’s web portals. 8. Consider deploying web application firewalls (WAF) with rules tailored to detect and block XSS payloads targeting AEM. 9. Conduct security testing, including penetration testing and code reviews, focusing on input handling and output encoding in AEM environments.