May 15, 2025 · Applied Cybernetics Group
CVE-2025-42999 — SAP NetWeaver
known ransomware use
SAP NetWeaver Deserialization Vulnerability
- Added to KEV
2025-05-15- Federal due date
2025-06-05- Vendor
- SAP
- Product
- NetWeaver
- EPSS
- 96.3th percentile (score 0.139, as of
2026-09-16) - NVD CVSS v3.1
- 9.1 (CRITICAL)
- Ransomware use
- Known
- ATT&CK
- T1059 , T1190 , T1203 , T1505.003 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-42999
CISA short 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.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
NVD description
SAP NetWeaver Visual Composer Metadata Uploader is vulnerable when a privileged user can upload untrusted or malicious content which, when deserialized, could potentially lead to a compromise of confidentiality, integrity, and availability of the host system.