CVE-2025-42944: Maximum-Severity OS Command Execution Vulnerability in SAP NetWeaver
On September 9, 2025, SAP released its September 2025 Security Patch Day update with patches for 21 vulnerabilities. The most severe of these, CVE-2025-42944, is a maximum-severity deserialization vulnerability of untrusted Java objects in SAP NetWeaver that resides in the RMI-RP4 module. A remote unauthenticated threat actor can exploit this vulnerability by submitting a malicious payload to an open port to achieve arbitrary OS command execution.