CVE-2025-64793 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 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 malicious JavaScript code into vulnerable form fields within AEM. When other users, including administrators or content editors, browse pages containing these fields, the malicious script executes in their browsers. This can lead to theft of session cookies, user impersonation, unauthorized actions, or manipulation of displayed content. The vulnerability has a CVSS 3.1 base score of 5.4, indicating medium severity. The vector string (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N) shows that the attack is network exploitable, requires low privileges, and user interaction is necessary. The scope is changed, meaning the vulnerability can affect resources beyond the initially vulnerable component. Confidentiality and integrity impacts are low but present, while availability is not affected. No public exploits are known at this time, but the vulnerability is publicly disclosed and should be addressed promptly. 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 their web presence and digital services.

For European organizations, this vulnerability poses a risk to the confidentiality and integrity of web applications managed through Adobe Experience Manager. Attackers exploiting this vulnerability could steal session tokens or credentials, leading to unauthorized access to sensitive content or administrative functions. This could result in data breaches, defacement of websites, or manipulation of customer-facing content, damaging brand reputation and customer trust. Since AEM is often used by large enterprises, government agencies, and digital service providers in Europe, exploitation could disrupt critical digital services or expose sensitive user data. The requirement for low privileges and user interaction lowers the barrier for exploitation but limits the attack to scenarios where users visit maliciously crafted pages. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits following public disclosure. Organizations in sectors such as finance, public administration, and media, which rely heavily on AEM, are particularly at risk.

1. Monitor Adobe’s official channels for patches addressing CVE-2025-64793 and apply them immediately upon release. 2. Until patches are available, implement strict input validation and output encoding on all form fields within AEM to prevent injection of malicious scripts. 3. Restrict access to form fields that accept user input to trusted and authenticated users only, minimizing the risk of malicious data submission. 4. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. 5. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including XSS. 6. Educate users and administrators about the risks of clicking on suspicious links or visiting untrusted pages that might trigger stored XSS payloads. 7. Use web application firewalls (WAFs) with rules designed to detect and block XSS attack patterns targeting AEM. 8. Review and harden AEM configurations to minimize exposure of vulnerable components and unnecessary features. 9. Implement logging and monitoring to detect unusual activities that may indicate exploitation attempts.