CVE-2025-64839
📋 TL;DR
This stored Cross-Site Scripting vulnerability in Adobe Experience Manager allows low-privileged attackers to inject malicious JavaScript into vulnerable form fields. When victims browse pages containing the compromised fields, their browsers execute the attacker's scripts. Organizations using Adobe Experience Manager versions 6.5.23 and earlier are affected.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, perform actions as authenticated users, deface websites, or redirect users to malicious sites, potentially leading to complete system compromise.
Likely Case
Attackers with low privileges will typically steal user session data, perform limited actions within user permissions, or deface specific pages.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, though the underlying code flaw remains.
🎯 Exploit Status
Exploitation requires low-privileged access to vulnerable form fields. The vulnerability is stored/persistent, making it more dangerous than reflected XSS.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.24 or later
Vendor Advisory: https://helpx.adobe.com/security/products/experience-manager/apsb25-115.html
Restart Required: Yes
Instructions:
1. Download Adobe Experience Manager 6.5.24 or later from Adobe's official distribution channels. 2. Follow Adobe's upgrade documentation for your specific deployment type. 3. Apply the update to all affected instances. 4. Restart the AEM service. 5. Verify the update was successful.
🔧 Temporary Workarounds
Input Validation Filter
allImplement custom servlet filters to sanitize all user input before processing
Implement Java servlet filter with OWASP Java Encoder library for input sanitization
Content Security Policy
allImplement strict Content Security Policy headers to limit script execution
Add 'Content-Security-Policy: script-src 'self'' to HTTP response headers
🧯 If You Can't Patch
- Restrict low-privileged user access to content editing and form submission capabilities
- Implement web application firewall rules to block XSS payload patterns
🔍 How to Verify
Check if Vulnerable:
Check Adobe Experience Manager version via AEM Web Console (/system/console) or by examining the CRX package manager for installed versionsCheck Version:
curl -k https://[aem-host]:[port]/system/console/status-productinfo 2>/dev/null | grep 'Adobe Experience Manager'Verify Fix Applied:
Verify version is 6.5.24 or later and test form fields with XSS payloads to confirm sanitization📡 Detection & Monitoring
Log Indicators:
- Unusual content modifications in form submissions
- JavaScript payloads in request logs
- Multiple failed XSS attempts
Network Indicators:
- Suspicious script tags in HTTP POST requests to form endpoints
- Unusual outbound connections from AEM to external domains
SIEM Query:
source="aem-access.log" AND ("<script>" OR "javascript:" OR "onload=" OR "onerror=")