CVE-2025-64560: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64560 is a DOM-based Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager (AEM) that allows a low-privileged authenticated attacker to execute malicious scripts in the context of a victim's browser. It affects AEM versions 6.5.23 and earlier (on-premises) and AEM Cloud Service versions prior to 2025.12.0. Adobe disclosed and patched this vulnerability on December 9, 2025. It carries a CVSS v3.1 base score of 5.4 (Medium) (Adobe Advisory).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation — Cross-Site Scripting), specifically of the DOM-based variant. An attacker with low privileges can craft a malicious URL or manipulate a web page such that unsanitized user-controlled input is processed by the victim's browser DOM, causing script execution in the victim's session context. Exploitation requires user interaction — the victim must visit a crafted URL or interact with a manipulated page — and the attack is delivered over the network with low complexity (Adobe Advisory).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of the victim's browser session within AEM, potentially leading to session token theft, credential harvesting, unauthorized actions performed on behalf of the victim, or further phishing attacks. The scope is changed (cross-origin impact), with low confidentiality and low integrity impact, and no direct availability impact. While the individual CVE score is Medium, AEM instances often handle sensitive enterprise content, making XSS exploitation a meaningful risk for data exposure and account compromise (Adobe Advisory).

1. Reconnaissance: Identify AEM instances running versions 6.5.23 or earlier, or AEM Cloud Service prior to 2025.12.0, using web fingerprinting tools or Shodan searches for AEM-specific paths (e.g., /libs/granite/core/content/login.html).
2. Obtain low-privileged access: Register or obtain a low-privileged AEM user account, as the vulnerability requires authenticated access.
3. Craft malicious URL: Identify a DOM-based XSS sink within AEM's client-side JavaScript that processes URL parameters or fragment identifiers without proper sanitization.
4. Deliver payload: Craft a URL containing a malicious JavaScript payload in the vulnerable parameter (e.g., https://target-aem-instance/vulnerable-path#<script>malicious_payload</script>) and deliver it to a victim via phishing email, social engineering, or embedded link.
5. Victim interaction: When the victim (ideally a higher-privileged AEM user) clicks the link and their browser processes the DOM, the injected script executes in their session context.
6. Achieve objective: The executed script can steal session cookies, exfiltrate CSRF tokens, perform actions on behalf of the victim within AEM, or redirect the victim to an attacker-controlled page (Adobe Advisory).

• Network: Unusual outbound HTTP requests from victim browsers to attacker-controlled domains originating from AEM page interactions; requests containing encoded JavaScript payloads in URL fragments or query parameters targeting AEM endpoints.
• Logs: AEM access logs showing requests to vulnerable endpoints with suspicious URL-encoded characters (%3Cscript%3E, javascript:, onerror=, etc.) in parameters or hash fragments.
• Browser/Application: Unexpected JavaScript execution errors in browser console logs related to AEM pages; anomalous DOM manipulation events on AEM content pages.
• User Activity: Reports of unexpected actions performed within AEM under a user's account (content modifications, permission changes) that the user did not initiate, potentially indicating session hijacking via XSS.

Adobe has released patches addressing CVE-2025-64560: AEM on-premises users should upgrade to version 6.5.24.0 or later, and AEM Cloud Service users are protected as of the 2025.12.0 release. No specific configuration-based workaround has been published; upgrading to the patched version is the recommended remediation. Organizations should also enforce Content Security Policy (CSP) headers on AEM instances as a defense-in-depth measure to limit the impact of any XSS vulnerabilities (Adobe Advisory).

The Center for Internet Security (CIS) issued an advisory noting multiple vulnerabilities in Adobe products patched in December 2025, including this CVE, recommending prompt patching (CIS Advisory). Tenable also tracked this issue in their vulnerability pipeline. No significant independent researcher commentary or social media discussion specific to CVE-2025-64560 has been identified, consistent with its medium severity rating and lack of public exploit code.