Understanding the AEM OGNL Remote Code Execution Flaw
CISA has flagged CVE-2025-54253, a maximum-severity (CVSS 10.0) vulnerability in Adobe Experience Manager (AEM), as already under active attack. The root cause lies in how the /adminui/debug servlet misinterprets user-supplied OGNL expressions as Java code without authentication or validation. This flaw lets unauthenticated attackers execute system commands remotely. In this article, you’ll get the full technical breakdown, threat scenarios, detection strategies, mitigation plans, and best practices specific to AEM deployments.