CVE-2025-42999
Insecure Deserialization in SAP NetWeaver (Visual Composer development server)
- Critical 9.1
- Exploited: added to CISA KEV 15 May 2025
- Used in ransomware campaigns
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.
Key facts
- Published
- 13 May 2025
- Last changed
- 11 Aug 2026
- Assigned by
- sap
- KEV added
- 15 May 2025
- KEV fix due
- 5 Jun 2025
- Used in ransomware
- Yes, according to CISA
- EPSS
- 12.854% likely to be exploited in the next 30 days, higher than 96.362% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.1CVSS 3.1, Criticalfrom the CNA (sap)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| SAP_SE | SAP NetWeaver (Visual Composer development server) |
|
Timeline
- 13 May 2025 Published
- 15 May 2025 CVE-2025-42999 added to CISA KEV
- 15 May 2025 Added to the CISA KEV catalogue