CVE-2025-42999

Insecure Deserialization in SAP NetWeaver (Visual Composer development server)

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.

Affected

SAP_SE · SAP NetWeaver (Visual Composer development server)

CVSS v3.1 SAP

9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS

12.74% chance of exploitation in the next 30 days, 96th percentile

CISA KEV

added 2025-05-15, used in ransomware campaigns

Published

2025-05-13

Updated

2026-08-11

Proof-of-concept exploits (2)

• https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/
• Onapsis/Onapsis-Mandiant-CVE-2025-31324-Vuln-Compromise-Assessment9★ · 2025-06-06

Security advisories

• https://url.sap/sapsecuritypatchday
• https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324

References

• CVE Record
• NVD entry

Related

• CVE-2025-31324