CVE-2025-46912 is a stored Cross-Site Scripting (XSS) vulnerability affecting 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 subsequently accesses a page containing the compromised form field, the malicious script executes in their browser context. The vulnerability is characterized by a CVSS v3.1 base score of 5.4, indicating a medium severity level. The attack vector is network-based (AV:N), requires low privileges (PR:L), and user interaction (UI:R) to trigger the exploit. The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially vulnerable component. The impact affects confidentiality and integrity (both low), but does not impact availability. Stored XSS vulnerabilities like this can be leveraged to steal session cookies, perform actions on behalf of authenticated users, or deliver further malware payloads. Adobe Experience Manager is widely used by enterprises for content management and digital experience delivery, making this vulnerability significant in environments where AEM is deployed. No known exploits are currently reported in the wild, and no official patches have been linked yet, indicating that organizations should prioritize monitoring and mitigation efforts.

For European organizations, the impact of this vulnerability can be substantial, especially for those relying on Adobe Experience Manager for managing web content and customer-facing portals. Exploitation could lead to unauthorized access to sensitive user data, session hijacking, and potential defacement or manipulation of web content, undermining user trust and compliance with data protection regulations such as GDPR. The medium severity score reflects the need for caution, as attackers require some level of access and user interaction, but the persistent nature of stored XSS increases the risk of widespread impact once exploited. Organizations in sectors like finance, government, healthcare, and e-commerce, which often use AEM for digital engagement, could face reputational damage, regulatory penalties, and operational disruptions if this vulnerability is exploited.

To mitigate this vulnerability, European organizations should: 1) Immediately audit their Adobe Experience Manager instances to identify affected versions and vulnerable form fields. 2) Implement strict input validation and output encoding on all user-supplied data within AEM forms to prevent script injection. 3) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4) Monitor web application logs for unusual input patterns or repeated attempts to inject scripts. 5) Restrict access to AEM administrative and content authoring interfaces to trusted users with minimal privileges. 6) Stay alert for official Adobe patches or security advisories and apply updates promptly once available. 7) Conduct security awareness training for users to recognize and avoid interacting with suspicious content. 8) Consider deploying Web Application Firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting AEM. These measures go beyond generic advice by focusing on both proactive detection and layered defense tailored to the specific characteristics of AEM and this vulnerability.