CVE-2025-64833 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.23 and earlier. Stored XSS occurs when malicious scripts are permanently stored on a target server, such as within form fields, and later executed in the browsers of users who access the affected content. In this case, a low-privileged attacker can inject arbitrary JavaScript code into vulnerable form fields within AEM. When other users visit the compromised pages, the malicious scripts execute in their browsers, potentially allowing the attacker to steal session cookies, perform actions on behalf of the user, or manipulate the displayed content. The vulnerability has a CVSS 3.1 base score of 5.4, indicating medium severity. The attack vector is network-based (AV:N), with low attack complexity (AC:L), requiring low privileges (PR:L) and user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially vulnerable component. Confidentiality and integrity impacts are rated low, while availability is not affected. No patches are currently linked, and no known exploits have been observed in the wild. The vulnerability is classified under CWE-79, a common and well-understood web security issue. Adobe Experience Manager is widely used by enterprises for managing digital content and customer experiences, making this vulnerability relevant for organizations relying on AEM for public-facing websites or intranet portals. Exploitation could lead to data leakage, session hijacking, or defacement, impacting user trust and compliance with data protection regulations.

For European organizations, the impact of CVE-2025-64833 can be significant, especially for those using Adobe Experience Manager to deliver digital content and services. Exploitation could lead to unauthorized disclosure of sensitive information such as session tokens or personal data, violating GDPR requirements and potentially resulting in regulatory penalties. Integrity of web content could be compromised, damaging brand reputation and user trust. Attackers might leverage the vulnerability to conduct phishing or social engineering attacks by injecting malicious scripts that alter page behavior or appearance. Although availability is not directly impacted, the indirect effects of compromised user trust and potential legal consequences can be severe. Organizations with public-facing AEM deployments are at higher risk, particularly those in sectors like finance, government, healthcare, and e-commerce, where digital presence and data protection are critical. The requirement for user interaction and low privileges lowers the barrier for exploitation, increasing the likelihood of targeted attacks against European enterprises with valuable digital assets.

1. Monitor Adobe's official channels for patches addressing CVE-2025-64833 and apply them promptly once released. 2. Implement strict input validation and output encoding on all form fields within AEM to prevent injection of malicious scripts. Use context-aware encoding libraries to sanitize user input. 3. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 4. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including stored XSS, to identify and remediate weaknesses proactively. 5. Educate developers and administrators on secure coding practices and the risks associated with XSS vulnerabilities. 6. Use web application firewalls (WAFs) with rules tailored to detect and block XSS attack patterns targeting AEM. 7. Limit user privileges and access controls within AEM to reduce the potential for low-privileged attackers to inject malicious content. 8. Monitor logs and user activity for unusual behavior indicative of exploitation attempts. 9. Consider implementing multi-factor authentication (MFA) for administrative access to reduce risk from compromised credentials. 10. Maintain up-to-date backups of AEM content to enable rapid recovery in case of compromise.