CVE-2025-42999
SAP NetWeaver Deserialization Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 5 June 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 13.87% probability · 96th percentile
- CISA KEV
- Listed 15 May 2025 · due 5 June 2025 · used in ransomware campaigns
- Weakness
- CWE-502
- Affected
- sap/netweaver
- Source
- cna@sap.com
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. SAP users must have an account to log in and access the patch: https://me.sap.com/notes/3604119 ; https://nvd.nist.gov/vuln/detail/CVE-2025-42999
References
- https://me.sap.com/notes/3604119Permissions Required
- https://url.sap/sapsecuritypatchdayVendor Advisory
- https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-42999US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.