CVE-2025-64544: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64544 is a DOM-based Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager (AEM) that allows a low-privileged 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. The vulnerability was published on December 9, 2025, with the advisory last modified on December 10, 2025. It carries a CVSS v3.1 base score of 5.4 (Medium) (Adobe Advisory, Feedly).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation — Cross-Site Scripting), specifically of the DOM-based variant. Exploitation requires the attacker to have low-level authenticated access and to induce user interaction, such as convincing a victim to visit a crafted URL or interact with a manipulated web page. The attack vector is network-based, with low complexity, and the scope is changed — meaning the impact can extend beyond the vulnerable component itself. No public proof-of-concept code has been identified at this time (Adobe Advisory, Feedly).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the victim's browser session within the AEM application context, potentially leading to session token theft, credential harvesting, unauthorized actions on behalf of the victim, or further lateral movement within the AEM environment. The changed scope indicates that the impact can affect resources beyond the directly vulnerable component, such as other users' sessions or data. Confidentiality and integrity are both partially impacted, while availability is not directly affected (Adobe Advisory, Feedly).

1. Reconnaissance: Identify target AEM instances running version 6.5.23 or earlier, or AEM Cloud Service prior to 2025.12.0, using web fingerprinting tools or Shodan.
2. Obtain low-privileged access: Register or obtain a low-privileged user account on the target AEM instance, as the vulnerability requires authenticated access (PR:L).
3. Craft malicious payload: Construct a URL or web page that injects a malicious JavaScript payload into a DOM-based XSS-vulnerable parameter or endpoint within AEM.
4. Deliver to victim: Trick a higher-privileged user (e.g., AEM administrator or content author) into visiting the crafted URL or interacting with the manipulated page, via phishing or social engineering.
5. Execute payload: The victim's browser processes the malicious DOM manipulation, executing the attacker's JavaScript in the AEM application context — enabling session hijacking, credential theft, or unauthorized actions on behalf of the victim (Adobe Advisory).

• Network: Unusual or unexpected HTTP requests to AEM endpoints containing encoded JavaScript payloads (e.g., <script>, javascript:, onerror=, onload=) in URL parameters or fragment identifiers.
• Logs: AEM access logs showing requests with suspicious query strings or hash fragments containing XSS payloads; browser-side console errors related to unexpected script execution.
• Process/Session: Unexpected session activity from privileged AEM accounts (e.g., logins from unusual IPs or at unusual times following user interaction with a suspicious link).
• File System: Unexpected changes to AEM content or user account settings that could indicate unauthorized actions performed via a hijacked session.

Adobe has released patches addressing CVE-2025-64544: AEM on-premises users should upgrade to version 6.5.24.0 or later, and AEM Cloud Service users are automatically updated to 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 the principle of least privilege for AEM user accounts and educate users about phishing and social engineering risks (Adobe Advisory).

The Center for Internet Security (CIS) published an advisory noting multiple vulnerabilities in Adobe products, including this CVE, that could allow for arbitrary code execution (CIS Advisory). No notable independent researcher commentary or significant social media discussion has been identified for this specific CVE at this time.