CVE-2025-47040 is a stored DOM-based Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.22 and earlier. This vulnerability arises from insufficient input sanitization in certain form fields within the AEM platform, allowing a low-privileged attacker to inject malicious JavaScript code that is persistently stored on the server. When a victim user accesses a page containing the compromised form field, the malicious script executes in their browser context. The vulnerability is classified under CWE-79, indicating improper neutralization of input during web page generation. The CVSS 3.1 base score is 5.4 (medium severity), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring low privileges (PR:L), user interaction required (UI:R), scope changed (S:C), and impacts on confidentiality and integrity (C:L/I:L) but no impact on availability (A:N). The vulnerability allows attackers to potentially steal session tokens, perform actions on behalf of users, or manipulate client-side content, leading to confidentiality and integrity breaches. No known exploits in the wild have been reported yet, and no official patches have been linked at the time of publication. The vulnerability affects a widely used enterprise content management system, which is often integrated into critical business workflows and customer-facing portals.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Adobe Experience Manager to manage digital content, customer portals, or internal collaboration platforms. Exploitation could lead to unauthorized disclosure of sensitive information, session hijacking, or unauthorized actions performed under the guise of legitimate users. This can result in reputational damage, regulatory non-compliance (e.g., GDPR violations due to data leakage), and potential financial losses. Since AEM is often used by large enterprises, government agencies, and public sector organizations in Europe, the risk extends to critical infrastructure and services. The requirement for user interaction limits automated mass exploitation but targeted phishing or social engineering campaigns could facilitate successful attacks. The scope change in the CVSS vector indicates that the vulnerability can affect resources beyond the initially vulnerable component, potentially amplifying the impact within interconnected systems.

1. Immediate mitigation should include reviewing and restricting user input in all form fields within Adobe Experience Manager to ensure proper input validation and output encoding, especially for HTML and JavaScript contexts. 2. Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing AEM-managed content. 3. Monitor and audit logs for unusual activities or injection attempts targeting form fields. 4. Limit privileges of users who can submit content to trusted personnel only, reducing the risk of malicious input from low-privileged attackers. 5. Apply any available Adobe patches or updates as soon as they are released. 6. Conduct security awareness training for users to recognize and avoid phishing attempts that could trigger user interaction-based exploits. 7. Consider deploying Web Application Firewalls (WAF) with rules tailored to detect and block XSS payloads targeting AEM. 8. Regularly scan AEM instances with specialized vulnerability scanners to detect injection points and verify remediation effectiveness.