CVE-2025-64796 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM) versions 6.5.23 and earlier. This vulnerability arises from insufficient sanitization of user-supplied input in certain form fields, allowing an attacker with low privileges to inject malicious JavaScript code that is stored persistently on the server. When a victim user accesses the affected page, the malicious script executes in their browser context, potentially enabling session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability requires the attacker to have the ability to submit data to the vulnerable form fields, and the victim must interact with the compromised page for the exploit to succeed. The CVSS 3.1 base score of 5.4 reflects a medium severity, with an attack vector of network, low attack complexity, requiring privileges, and user interaction. The scope is changed, indicating that the vulnerability can affect resources beyond the initially vulnerable component. No public exploits have been reported yet, and no patches are currently linked, indicating that organizations should monitor Adobe advisories closely. The vulnerability falls under CWE-79, which is a common and well-understood web security issue. Given AEM's widespread use in enterprise content management, exploitation could lead to significant confidentiality and integrity risks, especially in environments where sensitive data or critical business processes are managed through AEM portals.

For European organizations, the impact of CVE-2025-64796 can be significant, particularly for those relying on Adobe Experience Manager for public-facing websites, intranets, or customer portals. Exploitation could lead to unauthorized disclosure of sensitive information such as session tokens, personal data, or internal business information, violating GDPR and other data protection regulations. Integrity of displayed content could be compromised, potentially damaging organizational reputation and trust. Although availability impact is low, the ability to execute arbitrary scripts could facilitate further attacks like phishing, malware delivery, or lateral movement within the network. Sectors such as government, finance, healthcare, and large enterprises with complex web infrastructures are especially vulnerable. The requirement for user interaction and attacker privileges somewhat limits the attack surface but does not eliminate risk, as attackers may leverage social engineering or compromised low-privilege accounts. The lack of known exploits in the wild currently reduces immediate risk but should not lead to complacency.

1. Monitor Adobe's official security advisories and apply patches or updates for Adobe Experience Manager as soon as they become available. 2. Implement strict input validation and output encoding on all user-supplied data in AEM forms to prevent script injection. 3. Use Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4. Conduct regular security audits and penetration testing focused on web application vulnerabilities, especially XSS. 5. Employ web application firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting AEM. 6. Educate users and administrators about phishing and social engineering risks that could facilitate exploitation. 7. Restrict privileges for users who can submit data to vulnerable forms, minimizing the potential for malicious input. 8. Monitor logs for unusual form submissions or script execution patterns indicative of attempted exploitation. 9. Consider isolating or sandboxing critical AEM components to limit the scope of potential compromise. 10. Review and harden session management to mitigate session hijacking risks if XSS is exploited.