CVE-2025-64581 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-supplied input in form fields, allowing a low-privileged attacker to inject malicious JavaScript code that is stored persistently on the affected web application. When legitimate users access the compromised pages, the malicious script executes in their browsers, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability requires the attacker to have some level of access to submit data (low privilege) and relies on user interaction to trigger the payload. The CVSS v3.1 base score of 5.4 reflects a network attack vector, low attack complexity, low privileges required, and user interaction needed, with impacts on confidentiality and integrity but no impact on availability. No public exploits have been reported yet, but the vulnerability is publicly disclosed and should be treated seriously due to the widespread use of AEM in enterprise content management. The vulnerability's scope is limited to the affected AEM versions, and mitigation strategies include patching, input validation, output encoding, and security headers.

For European organizations, this vulnerability poses risks primarily to confidentiality and integrity of web applications managed via Adobe Experience Manager. Attackers could steal session cookies, enabling account takeover or unauthorized access to sensitive information. Manipulation of web content could lead to misinformation or phishing attacks targeting employees or customers. Although availability is not directly impacted, reputational damage and loss of trust could result from successful exploitation. Organizations with public-facing AEM portals, especially those handling sensitive customer data or internal communications, are at higher risk. The medium severity score indicates that while the vulnerability is not critical, it can be leveraged in targeted attacks, especially in environments where user privileges are not tightly controlled or where users are less security-aware. The lack of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, as attackers may develop exploits following public disclosure.

1. Apply official Adobe patches or updates for Adobe Experience Manager as soon as they become available to remediate the vulnerability. 2. Implement strict input validation on all form fields to reject or sanitize potentially malicious scripts before storage. 3. Use robust output encoding techniques (e.g., HTML entity encoding) when rendering user-supplied data in web pages to prevent script execution. 4. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 5. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including XSS. 6. Educate users and administrators about the risks of XSS and encourage cautious behavior when interacting with web content. 7. Monitor web application logs for unusual input patterns or repeated attempts to inject scripts. 8. Limit privileges of users who can submit data to the application to reduce the attack surface. 9. Consider implementing Web Application Firewalls (WAF) with rules tailored to detect and block XSS payloads targeting AEM. 10. Review and harden AEM configurations to minimize exposure of vulnerable components.