A critical misconfiguration vulnerability has been identified in Adobe Experience Manager (AEM), assigned a maximum CVSS severity score of 10. This flaw allows an unauthenticated attacker to execute arbitrary code on the server, potentially leading to a complete system compromise. Organizations must take immediate action to patch affected systems to prevent data theft, service disruption, and further network intrusion.

The vulnerability stems from a default or insecure configuration within the Adobe Experience Manager platform. An attacker can exploit this misconfiguration, likely related to an exposed OSGi console or an improperly secured JCR (Java Content Repository) path, to upload and deploy a malicious code package or OSGi bundle. Once the malicious code is deployed, it executes with the privileges of the AEM service account, granting the attacker full control over the application server and underlying operating system.

This vulnerability is rated as critical severity with a CVSS score of 10, representing the highest possible risk. Successful exploitation would grant an attacker complete control over the AEM server, leading to severe business consequences. These include the theft of sensitive data stored or managed by AEM (e.g., customer data, proprietary information), website defacement, complete service disruption, and significant reputational damage. The compromised server could also be used as a pivot point to launch further attacks against the internal network, escalating the security incident.

Immediate Action: Immediately apply the security updates provided by Adobe to upgrade all AEM instances to a version higher than 6.5.23. Before and after patching, closely monitor for any signs of active exploitation. Review access logs, audit logs, and OSGi bundle configurations for any unauthorized changes or suspicious activity occurring prior to the patch deployment.

Proactive Monitoring: Implement enhanced monitoring to detect potential exploitation attempts.

• Log Analysis: Scrutinize AEM access and error logs for unusual requests, especially to administrative endpoints like /system/console. Look for logs indicating new package installations or OSGi bundle state changes (install, start).
• Network Traffic: Monitor for anomalous outbound connections from AEM servers, which could indicate a reverse shell or data exfiltration.
• File Integrity Monitoring: Monitor the AEM installation directory, particularly the crx-quickstart/launchpad/felix directory, for unauthorized file creation or modification.

Compensating Controls: If immediate patching is not feasible, implement the following controls to reduce risk:

• Restrict network access to AEM administrative consoles (/system/console, /crx/de). These should never be exposed to the public internet.
• Implement a Web Application Firewall (WAF) with rules to block access patterns associated with AEM exploitation.
• Review and harden OSGi and JCR permissions to enforce the principle of least privilege, preventing anonymous or low-privileged users from deploying code.

Public Exploit Available: false

Given the critical severity (CVSS 10) and the potential for complete system compromise, this vulnerability poses an extreme risk to the organization. The highest priority is to apply the vendor-provided patches to all affected Adobe Experience Manager instances without delay. While this CVE is not currently on the CISA KEV list, its characteristics make it a strong candidate for future inclusion. All remediation and monitoring actions should be treated with the utmost urgency to prevent a potentially catastrophic security breach.