CVE-2025-64863
📋 TL;DR
A stored cross-site scripting (XSS) vulnerability in Adobe Experience Manager allows low-privileged attackers to inject malicious JavaScript into form fields. When victims browse pages containing the compromised fields, their browsers execute the attacker's code. This affects AEM versions 6.5.23 and earlier.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware through drive-by downloads.
Likely Case
Session hijacking, credential theft, or defacement of web pages through injected content.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Exploitation requires authenticated low-privileged access and knowledge of vulnerable form fields.
🛠️ 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 AEM 6.5.24 or later from Adobe's distribution portal. 2. Apply the service pack following Adobe's upgrade documentation. 3. Restart the AEM instance. 4. Verify the update completed successfully.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources and prevent inline script execution.
Add 'Content-Security-Policy' header with appropriate directives to web server configuration
Input Validation and Output Encoding
allImplement server-side validation and proper output encoding for all user inputs in form fields.
Configure AEM's XSS protection filters and implement custom validation components
🧯 If You Can't Patch
- Restrict low-privileged user access to content creation and editing capabilities
- Implement web application firewall (WAF) rules to detect and block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check AEM version via the Welcome screen or OSGi console. Versions 6.5.23 and earlier are vulnerable.Check Version:
Navigate to /system/console/bundles in AEM and check version information, or check the Welcome screen.Verify Fix Applied:
Verify AEM version is 6.5.24 or later and test form fields with XSS payloads to ensure they're properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual content modifications in form fields
- JavaScript payloads in request logs
- Multiple failed XSS attempts
Network Indicators:
- Suspicious outbound connections from user browsers after visiting AEM pages
- Unexpected data exfiltration patterns
SIEM Query:
source="aem_logs" AND ("script" OR "javascript" OR "onerror" OR "onload") AND status="200"