CVE-2025-64857
📋 TL;DR
Adobe Experience Manager versions 6.5.23 and earlier contain a stored cross-site scripting vulnerability that allows low-privileged attackers to inject malicious scripts into form fields. When users visit pages containing these compromised fields, their browsers execute the attacker's JavaScript, potentially leading to session hijacking or data theft.
💻 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, redirect users to malicious sites, or install malware through drive-by downloads.
Likely Case
Low-privileged attackers steal session cookies of regular users, potentially escalating privileges or accessing sensitive data within the application.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, though the underlying code flaw remains.
🎯 Exploit Status
Requires low-privileged attacker access to inject scripts into 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 Adobe Experience Manager 6.5.24 or later from Adobe's distribution portal. 2. Follow Adobe's upgrade documentation for your deployment type. 3. Apply the update to all instances. 4. Restart all AEM services. 5. Verify the update was successful.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize form field inputs before processing.
Configure AEM's XSS protection filters in /system/console/configMgr
Content Security Policy
allImplement strict Content Security Policy headers to restrict script execution.
Add CSP headers via Apache/Dispatcher configuration or AEM filters
🧯 If You Can't Patch
- Restrict low-privileged user access to vulnerable form fields and components.
- Implement web application firewall rules to block XSS payload patterns.
🔍 How to Verify
Check if Vulnerable:
Check AEM version via CRXDE Lite or system console. If version is 6.5.23 or earlier, system is vulnerable.Check Version:
curl -u admin:password http://localhost:4502/system/console/status-productinfo.json | grep versionVerify Fix Applied:
After patching, verify version is 6.5.24 or later and test form fields with XSS payloads to confirm sanitization.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to form endpoints with script tags or JavaScript payloads
- Multiple failed login attempts followed by form submissions
Network Indicators:
- HTTP requests containing <script> tags or JavaScript in form parameters
- Unusual outbound connections from user browsers after visiting AEM pages
SIEM Query:
source="aem-access.log" AND ("<script" OR "javascript:" OR "onload=" OR "onerror=")