CVE-2025-46964 is a stored DOM-based 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 the affected page containing the injected script, the malicious code executes in their browser context. The vulnerability arises from insufficient input validation and sanitization of user-supplied data in form fields, enabling persistent script injection that is stored on the server and delivered to other users. The CVSS 3.1 base score is 5.4 (medium severity), reflecting that the attack vector is network-based (AV:N), requires low privileges (PR:L), and user interaction (UI:R) is necessary to trigger the script execution. The scope is changed (S:C), indicating that the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality and integrity, as the attacker can execute arbitrary scripts, potentially stealing session tokens, performing actions on behalf of users, or defacing content. Availability is not impacted. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is categorized under CWE-79, a common and well-understood XSS weakness. Given AEM's role as a content management system widely used by enterprises for web content delivery, exploitation could lead to significant reputational damage and data leakage if exploited in targeted attacks.

For European organizations using Adobe Experience Manager, this vulnerability poses a moderate risk. AEM is widely deployed in sectors such as government, finance, media, and retail across Europe to manage public-facing websites and intranet portals. Exploitation could allow attackers to execute malicious scripts in the browsers of employees or customers, leading to session hijacking, credential theft, unauthorized actions, or distribution of malware. This could result in data breaches, loss of customer trust, regulatory non-compliance (e.g., GDPR violations), and financial penalties. The medium severity score reflects that while the vulnerability requires user interaction and some privileges, the potential for lateral movement or privilege escalation exists if combined with other vulnerabilities. The persistent nature of stored XSS increases risk compared to reflected XSS, as multiple users can be affected over time. European organizations with high web traffic or sensitive user data are particularly at risk. Additionally, the scope change indicates that the vulnerability could impact multiple components or services within AEM deployments, amplifying potential damage.

To mitigate CVE-2025-46964, European organizations should take the following specific actions beyond generic advice: 1) Immediately audit all AEM instances for usage of vulnerable versions (6.5.22 and earlier) and prioritize upgrades to the latest patched version once available. 2) Implement strict input validation and output encoding on all form fields, especially those accepting user-generated content, to prevent script injection. 3) Employ Content Security Policy (CSP) headers with restrictive script-src directives to limit execution of unauthorized scripts in browsers. 4) Conduct thorough code reviews and penetration testing focused on client-side scripting and DOM manipulation within AEM components. 5) Monitor web logs and application behavior for unusual input patterns or script injection attempts. 6) Educate users and administrators about the risks of clicking untrusted links or submitting suspicious content. 7) If patching is delayed, consider temporary workarounds such as disabling vulnerable form fields or restricting access to trusted users only. 8) Leverage Web Application Firewalls (WAFs) with custom rules to detect and block XSS payloads targeting AEM. These measures combined will reduce the attack surface and limit the impact of exploitation.