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
- 12.85% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 15 May 2025 · due 5 June 2025 · used in ransomware campaigns
- Weakness
- CWE-502
- Affected
- sap/netweaver
- Source
- cna@sap.com
EPSS moved from 12.7% on 9 October 2026 to 12.9% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
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, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.