CVE-2025-46929 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.22 and earlier. This vulnerability allows a low-privileged attacker to inject malicious JavaScript code into vulnerable form fields within the AEM interface. When a victim user accesses a page containing the compromised form field, the injected script executes in their browser context. The vulnerability is classified under CWE-79, which pertains to improper neutralization of input during web page generation, leading to XSS. 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), and user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the vulnerable component. The impact affects confidentiality and integrity (C:L, I:L) but not availability (A:N). Stored XSS is particularly dangerous because the malicious payload persists on the server and can affect multiple users without requiring the attacker to target each victim individually. In the context of AEM, which is widely used for enterprise content management and web experience delivery, exploitation could lead to session hijacking, credential theft, or unauthorized actions performed on behalf of users. No known exploits are currently reported in the wild, and no official patches have been linked yet, indicating that organizations should prioritize monitoring and prepare for patch deployment once available.

For European organizations using Adobe Experience Manager, this vulnerability poses a significant risk to the confidentiality and integrity of web applications and user data. A successful exploit could lead to unauthorized access to sensitive information, session hijacking, and manipulation of content or user actions within the affected web portals. Given that AEM is often used by government agencies, financial institutions, and large enterprises in Europe to manage public-facing websites and internal portals, exploitation could undermine trust, lead to data breaches, and cause reputational damage. The requirement for low privileges and user interaction lowers the barrier for exploitation, especially in environments where multiple users have access to AEM interfaces. Additionally, the scope change means that the impact could extend beyond the immediate vulnerable component, potentially affecting other integrated systems or services. The absence of known exploits currently provides a window for mitigation, but the medium severity score suggests that organizations should act promptly to reduce risk.

European organizations should implement the following specific mitigations: 1) Conduct an immediate audit of all AEM instances to identify versions 6.5.22 and earlier and isolate them if possible. 2) Restrict access to AEM administrative and content authoring interfaces to trusted personnel only, enforcing strict role-based access controls to minimize low-privileged user capabilities. 3) Implement web application firewalls (WAFs) with custom rules to detect and block suspicious input patterns targeting form fields in AEM. 4) Educate users and administrators about the risk of XSS and the importance of not interacting with suspicious content or links within AEM portals. 5) Monitor logs and user activity for unusual behavior indicative of exploitation attempts. 6) Prepare for rapid deployment of official patches from Adobe once released, including testing in staging environments to ensure compatibility. 7) Consider deploying Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts within affected web applications. 8) Review and sanitize all user-generated content input fields within AEM to reduce injection vectors. These targeted actions go beyond generic advice by focusing on access control, monitoring, and proactive preparation for patching in the context of AEM deployments.