CVE-2025-49533
📋 TL;DR
Adobe Experience Manager versions 6.5.23.0 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code without user interaction. This affects all organizations running vulnerable AEM instances, potentially compromising entire systems. The vulnerability is rated CVSS 9.8 (Critical) due to its ease of exploitation and severe impact.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to data theft, ransomware deployment, lateral movement across networks, and persistent backdoor installation.
Likely Case
Attackers gain initial foothold on AEM servers, install cryptocurrency miners or data exfiltration tools, and potentially pivot to other internal systems.
If Mitigated
Attack attempts are detected and blocked by network segmentation, WAF rules, or runtime protection, limiting impact to isolated segments.
🎯 Exploit Status
Deserialization vulnerabilities in enterprise software are frequently weaponized quickly. The advisory confirms exploitation doesn't require authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.24.0 or later
Vendor Advisory: https://helpx.adobe.com/security/products/aem-forms/apsb25-67.html
Restart Required: Yes
Instructions:
1. Download AEM 6.5.24.0 or later from Adobe's distribution portal. 2. Backup current AEM instance and configuration. 3. Stop AEM service. 4. Apply the update following Adobe's upgrade documentation. 5. Restart AEM service. 6. Verify successful upgrade and functionality.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to AEM instances using firewalls to only allow necessary connections from trusted sources.
WAF Rule Implementation
allDeploy Web Application Firewall rules to block suspicious deserialization patterns and payloads targeting AEM endpoints.
🧯 If You Can't Patch
- Isolate AEM instances in separate network segments with strict firewall rules
- Implement runtime application self-protection (RASP) or intrusion prevention systems
🔍 How to Verify
Check if Vulnerable:
Check AEM version via the AEM welcome page (/libs/granite/core/content/login.html) or by examining the CRX package manager. Versions 6.5.23.0 or earlier are vulnerable.Check Version:
curl -s http://aem-host:port/libs/granite/core/content/login.html | grep 'AEM' or check /system/console/status-productinfo endpointVerify Fix Applied:
Verify AEM version is 6.5.24.0 or later. Test critical functionality remains operational post-upgrade.📡 Detection & Monitoring
Log Indicators:
- Unusual Java deserialization errors in AEM logs
- Suspicious class loading from unexpected sources
- Unexpected process execution from AEM service account
Network Indicators:
- HTTP requests with serialized Java objects to AEM endpoints
- Outbound connections from AEM servers to unknown external IPs
SIEM Query:
source="aem.log" AND ("deserialization" OR "ClassNotFoundException" OR "InvalidClassException")