CVE-2025-46924 is a stored 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 AEM, allowing a low-privileged attacker to inject malicious JavaScript code that is persistently stored on the server. When a victim user accesses the affected page containing the injected script, the malicious code executes in their browser context. This type of stored XSS can lead to session hijacking, credential theft, unauthorized actions performed on behalf of the user, or the delivery of further malware payloads. The vulnerability has a CVSS 3.1 base score of 5.4, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N) shows that the attack can be launched remotely over the network, requires low privileges, and user interaction is necessary (e.g., the victim must visit the malicious page). The scope is changed (S:C), meaning the vulnerability affects components beyond the initially vulnerable component, potentially impacting confidentiality and integrity but not availability. No known exploits are reported in the wild yet, and no official patches have been linked at the time of publication. The vulnerability is categorized under CWE-79, which is the standard classification for Cross-Site Scripting issues. Given that Adobe Experience Manager is widely used by enterprises for content management and digital experience delivery, exploitation of this vulnerability could allow attackers to compromise user sessions and manipulate content or user interactions within affected web applications.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Adobe Experience Manager to manage their digital content and customer-facing portals. Successful exploitation could lead to the theft of sensitive user data, including authentication tokens and personally identifiable information, undermining user trust and potentially violating GDPR requirements. The integrity of web content could be compromised, allowing attackers to inject misleading or malicious content, damaging brand reputation. Although availability is not directly impacted, the indirect effects of compromised user accounts or manipulated content could disrupt business operations and customer engagement. Organizations in sectors such as finance, government, healthcare, and e-commerce, which often use AEM for critical web services, are particularly at risk. Additionally, the requirement for user interaction means phishing or social engineering could be used to lure victims to vulnerable pages, increasing the attack surface. The medium severity score suggests that while the vulnerability is not critical, it still poses a tangible risk that must be addressed promptly to prevent exploitation.

European organizations should implement a multi-layered mitigation strategy beyond generic advice: 1) Immediate review and sanitization of all user input fields in Adobe Experience Manager forms to ensure proper encoding and validation, ideally using context-aware output encoding libraries. 2) Deploy Web Application Firewalls (WAFs) with custom rules to detect and block typical XSS payload patterns targeting AEM endpoints. 3) Conduct thorough security testing, including automated and manual penetration testing focused on stored XSS vectors within AEM-managed applications. 4) Educate content administrators and developers on secure coding practices and the risks of stored XSS to prevent future introduction of similar vulnerabilities. 5) Monitor user activity and logs for unusual behavior indicative of exploitation attempts, such as unexpected script injections or anomalous user sessions. 6) Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing AEM content. 7) Stay alert for official Adobe patches or security advisories and apply updates promptly once available. 8) Limit privileges of users who can submit content to reduce the risk posed by low-privileged attackers. These targeted actions will help reduce the attack surface and mitigate the risk posed by CVE-2025-46924 effectively.