CVE-2025-64596 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM), specifically affecting versions 6.5.23 and earlier. Stored XSS vulnerabilities occur when malicious scripts are permanently stored on a target server, such as in form fields or databases, and then served to users without proper sanitization. In this case, a low-privileged attacker can inject malicious JavaScript code into vulnerable form fields within AEM. When other users access pages containing these fields, the injected script executes in their browsers under the context of the vulnerable web application. This can lead to theft of session cookies, user impersonation, defacement, or redirection to malicious sites. The vulnerability requires the attacker to have some level of access to submit data (low privilege) and requires user interaction (visiting the affected page). The CVSS v3.1 base score is 5.4, indicating medium severity, with vector AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, meaning the attack is network-based, requires low attack complexity, low privileges, user interaction, and impacts confidentiality and integrity with a scope change. No patches or exploits are currently publicly available, but the vulnerability is officially published and reserved as of late 2025. Adobe Experience Manager is widely used by enterprises for managing digital content and websites, making this vulnerability significant for organizations relying on AEM for their web presence.

For European organizations, the impact of this vulnerability can be substantial, especially for those that use Adobe Experience Manager to manage public-facing websites or intranet portals. Successful exploitation can lead to unauthorized disclosure of sensitive information such as session tokens or personal data, enabling attackers to hijack user sessions or perform actions on behalf of legitimate users. This compromises confidentiality and integrity of user data and web content. Although availability is not directly impacted, the reputational damage and potential regulatory consequences under GDPR for data breaches could be severe. Attackers could also leverage this vulnerability to conduct phishing or social engineering attacks by injecting malicious scripts that alter page content or redirect users. Given the medium severity and requirement for user interaction, the threat is moderate but should not be underestimated, especially in sectors with high compliance requirements such as finance, healthcare, and government services.

1. Monitor Adobe’s official channels for patches addressing CVE-2025-64596 and apply them promptly once released. 2. Implement strict input validation and output encoding on all form fields within Adobe Experience Manager to prevent injection of malicious scripts. Use context-aware encoding (e.g., HTML entity encoding) to neutralize script tags. 3. Employ Content Security Policy (CSP) headers to restrict execution of unauthorized scripts in browsers, limiting the impact of any injected code. 4. Conduct regular security audits and penetration testing focused on web application inputs and stored data to detect potential XSS vulnerabilities. 5. Educate users and administrators about the risks of clicking on suspicious links or submitting untrusted data. 6. Use web application firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting AEM. 7. Restrict privileges for users who can submit data to the minimum necessary to reduce attack surface. 8. Implement logging and monitoring to detect anomalous activities related to form submissions and script injections.