CVE-2025-64825 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 of user input in certain form fields, allowing a low-privileged attacker to inject malicious JavaScript code that is stored persistently on the server. When other users access the affected pages, the malicious script executes in their browsers within the security context of the vulnerable site. This can lead to session hijacking, theft of sensitive information, or unauthorized actions performed on behalf of the victim. The vulnerability requires the attacker to have some level of access to submit data (low privilege) and requires user interaction (victim visiting the page). The CVSS 3.1 score of 5.4 reflects a medium severity, with attack vector being network-based, low attack complexity, privileges required, and user interaction necessary. The scope is changed, indicating that the vulnerability affects components beyond the initially compromised element, potentially impacting other users or systems. No patches are currently linked, and no known exploits have been reported in the wild, but the vulnerability is publicly disclosed and should be considered a risk. Adobe Experience Manager is widely used for enterprise content management and digital experience delivery, making this vulnerability relevant for organizations relying on AEM for web content management.

For European organizations, the impact of CVE-2025-64825 can be significant, especially for those using Adobe Experience Manager to manage customer-facing websites or internal portals. Exploitation could lead to unauthorized disclosure of sensitive information such as session cookies, personal data, or corporate credentials, undermining confidentiality. Integrity could be compromised by attackers injecting misleading or malicious content, potentially damaging brand reputation or causing misinformation. Although availability is not directly impacted, the trustworthiness of affected web applications may be degraded. Given the medium severity and requirement for user interaction, the threat is moderate but can be escalated if combined with social engineering or phishing campaigns. Organizations in sectors such as finance, government, healthcare, and media, which heavily rely on AEM for digital services, may face regulatory and compliance risks under GDPR if personal data is exposed. The lack of known exploits currently provides a window for proactive mitigation before active attacks emerge.

European organizations should implement the following specific mitigations: 1) Immediately review and restrict permissions to form fields and input areas in AEM to minimize exposure to untrusted input. 2) Apply strict input validation and sanitization on all user-supplied data, ensuring that scripts or HTML tags are properly escaped or removed before storage. 3) Implement robust output encoding on all dynamic content rendered in browsers to prevent script execution. 4) Monitor web application logs and user activity for unusual input patterns or repeated submission attempts that may indicate exploitation attempts. 5) Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 6) Stay alert for Adobe security advisories and apply official patches or updates as soon as they become available. 7) Conduct security awareness training to educate users about the risks of interacting with suspicious content. 8) Consider using web application firewalls (WAF) with rules tailored to detect and block XSS payloads targeting AEM. These measures, combined, reduce the attack surface and improve detection and response capabilities.