CVE-2025-42999
Critical 9.1 Exploited in the wild (KEV) Used in ransomware campaigns
Confirmed active exploitation — CISA KEV catalog
- Name
- SAP NetWeaver Deserialization Vulnerability
- Added to catalog
- Remediation due date (US federal)
- 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.
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.
Metrics
- CVSS 3.1
-
9.1 (CRITICAL)
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 13% (percentile: 96) as of 1 November 2026
- CWE
- CWE-502
Affected products
sap: netweaver
References
- https://url.sap/sapsecuritypatchday Vendor Advisory
- https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-3132… ExploitThird Party Advisory
- https://me.sap.com/notes/3604119 Permissions Required
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025… US Government Resource