CVE-2025-42999
Published: May 15, 2025
Official Description
SAP NetWeaver Visual Composer Metadata Uploader contains a deserialization vulnerability that allows a privileged attacker to compromise the confidentiality, integrity, and availability of the host system by deserializing untrusted or malicious content.
CISA KEV Advisory
SAP NetWeaver Deserialization Vulnerability
SAP NetWeaver Visual Composer Metadata Uploader contains a deserialization vulnerability that allows a privileged attacker to compromise the confidentiality, integrity, and availability of the host system by deserializing untrusted or malicious content.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Risk Analysis
This deserialization vulnerability in SAP NetWeaver Visual Composer Metadata Uploader allows a privileged attacker to compromise the confidentiality, integrity, and availability of the host system. This flaw presents a significant risk due to the potential for full system compromise. The high EPSS score of 0.65707 and its inclusion in CISA's KEV confirm active exploitation.
Active exploitation of this vulnerability has been observed in the wild. This flaw requires a privileged attacker to exploit.
Apply all available security updates for SAP NetWeaver Visual Composer Metadata Uploader. Implement secure deserialization practices and restrict privileges for users and applications interacting with this component.
Technical Analysis
CVE-2025-42999 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2025-42999 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-42999 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1