CVE-2025-64814 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. The vulnerability arises from insufficient sanitization and encoding of user-supplied input in form fields, allowing a low-privileged attacker to inject malicious JavaScript code that is persistently stored on the server. When other users access the affected pages containing the malicious payload, the injected script executes in their browsers within the security context of the vulnerable AEM site. This can lead to session hijacking, theft of sensitive information, or unauthorized actions performed on behalf of the victim user. The vulnerability requires the attacker to have low-level privileges to submit data through vulnerable forms and requires user interaction to trigger the malicious script execution. The CVSS 3.1 base score is 5.4, indicating a medium severity level, with attack vector being network, low attack complexity, requiring privileges, and user interaction. The impact affects confidentiality and integrity but does not affect availability. No public exploits or patches are currently available, but the vulnerability has been officially published and reserved by Adobe. This vulnerability is classified under CWE-79, a common and well-understood web security issue. Organizations using AEM should be aware of this vulnerability due to the widespread use of AEM in enterprise web content management and the potential for attackers to leverage this flaw in targeted attacks or phishing campaigns.

For European organizations, the impact of CVE-2025-64814 can be significant, especially for those relying on Adobe Experience Manager for managing public-facing websites or internal portals. Successful exploitation can lead to the compromise of user sessions, leakage of sensitive data such as authentication tokens or personal information, and unauthorized actions performed on behalf of legitimate users. This can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR violations), and result in financial losses. The vulnerability's requirement for user interaction and low privileges lowers the barrier for attackers to exploit it in spear-phishing or social engineering scenarios. Given the extensive use of AEM in sectors such as government, finance, and healthcare across Europe, the risk of targeted attacks exploiting this vulnerability is elevated. However, the absence of known exploits in the wild currently reduces immediate risk, though this may change once exploit code becomes publicly available.

1. Monitor Adobe's official security advisories and apply patches or updates as soon as they are released for AEM versions 6.5.23 and earlier. 2. Implement strict input validation and output encoding on all form fields to prevent injection of malicious scripts, using context-aware encoding techniques. 3. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts within the browser environment. 4. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including XSS. 5. Educate users and administrators about the risks of phishing and social engineering attacks that could leverage this vulnerability. 6. Use web application firewalls (WAFs) configured to detect and block common XSS attack patterns targeting AEM. 7. Limit privileges for users submitting data through forms to the minimum necessary to reduce attack surface. 8. Monitor logs and web traffic for unusual activity indicative of attempted exploitation. 9. Consider isolating or sandboxing vulnerable components until patches are applied to reduce impact.