CVE-2025-46857
📋 TL;DR
Adobe Experience Manager versions 6.5.22 and earlier contain a reflected Cross-Site Scripting (XSS) vulnerability that allows low-privileged attackers to execute malicious JavaScript in victims' browsers by tricking them into clicking a specially crafted URL. This affects organizations using vulnerable AEM instances, particularly those with internet-facing components. The vulnerability requires user interaction but can lead to session hijacking or credential theft.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker steals administrator session cookies, gains full administrative access to AEM, deploys backdoors, exfiltrates sensitive data, or compromises connected systems.
Likely Case
Attacker steals user session cookies or credentials, performs actions as the victim within AEM, or redirects to phishing sites.
If Mitigated
Limited impact due to proper input validation, Content Security Policy headers, and user awareness training preventing successful exploitation.
🎯 Exploit Status
Exploitation requires low-privileged attacker credentials and social engineering to trick users into clicking malicious links.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.23 or later
Vendor Advisory: https://helpx.adobe.com/security/products/experience-manager/apsb25-48.html
Restart Required: Yes
Instructions:
1. Download AEM 6.5.23 or later from Adobe Distribution. 2. Backup current instance. 3. Apply Service Pack or upgrade to patched version. 4. Restart AEM instance. 5. Verify fix via version check.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to restrict script execution from untrusted sources
Add 'Content-Security-Policy: script-src 'self'' to web server configuration
Input Validation Filter
allDeploy custom servlet filter to sanitize URL parameters
Implement Java filter that validates and encodes URL parameters before processing
🧯 If You Can't Patch
- Restrict AEM access to trusted networks only using firewall rules
- Implement web application firewall (WAF) with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check AEM version via CRXDE Lite or system console. If version is 6.5.22 or earlier, system is vulnerable.Check Version:
curl -u admin:password http://localhost:4502/system/console/status-productinfo | grep 'Adobe Experience Manager'Verify Fix Applied:
Confirm AEM version is 6.5.23 or later and test XSS payloads against known vulnerable endpoints.📡 Detection & Monitoring
Log Indicators:
- Unusual URL parameters with script tags in access logs
- Multiple failed XSS attempts from same IP
Network Indicators:
- HTTP requests with suspicious parameters containing JavaScript payloads
SIEM Query:
source="aem_access.log" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")