CVE-2025-46915 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 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 malicious script, the injected JavaScript executes in their browser context. This can lead to a range of attacks including session hijacking, credential theft, unauthorized actions performed on behalf of the user, or the delivery of further malware. The vulnerability is classified under CWE-79, which covers improper neutralization of input during web page generation. The CVSS v3.1 base score is 5.4 (medium severity), reflecting that the attack vector is network-based, requires low privileges, and user interaction is necessary (the victim must visit the compromised page). The scope is changed (S:C), indicating that the vulnerability affects components beyond the initially vulnerable component, potentially impacting confidentiality and integrity but not availability. No known public exploits have been reported yet, and no official patches have been linked at the time of publication. Adobe Experience Manager is a widely used enterprise content management system, often deployed by large organizations to manage digital assets and web content, making this vulnerability significant in environments where AEM is used to serve content to internal or external users.

For European organizations, the impact of this vulnerability can be substantial, especially for those relying on Adobe Experience Manager for critical web content delivery and digital asset management. Exploitation could lead to unauthorized access to sensitive information, including user credentials and session tokens, potentially compromising user accounts and internal systems. This could result in data breaches, reputational damage, and regulatory non-compliance under GDPR due to exposure of personal data. Additionally, attackers could leverage the vulnerability to conduct phishing or social engineering campaigns by injecting malicious scripts that alter web content or redirect users to malicious sites. The medium severity score suggests a moderate risk, but the widespread use of AEM in sectors such as government, finance, and healthcare in Europe elevates the importance of timely mitigation. The requirement for user interaction means that social engineering or targeted attacks could increase the likelihood of successful exploitation.

European organizations should prioritize the following specific mitigation steps: 1) Immediately audit all AEM instances to identify versions 6.5.22 or earlier and plan for urgent upgrades to the latest patched version once available. 2) Implement strict input validation and output encoding on all form fields within AEM to prevent injection of malicious scripts, even if patches are pending. 3) Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious script injection attempts targeting AEM forms. 4) Conduct user awareness training to reduce the risk of successful exploitation via social engineering, emphasizing caution when interacting with unexpected or suspicious web content. 5) Monitor web server and application logs for unusual activity patterns indicative of attempted exploitation. 6) Where feasible, restrict access to AEM administrative and content management interfaces to trusted networks and authenticated users only. 7) Prepare incident response plans specifically addressing XSS attack scenarios to enable rapid containment and remediation if exploitation occurs.