CVE-2025-42999 CRITICAL

CVE-2025-42999: Insecure Deserialization in SAP NetWeaver (Visual Composer development server)

Vendor Sap_Se
Product SAP NetWeaver (Visual Composer development server)
Weakness CWE-502 · Unsafe deserialization
KEV Status Known Exploited
Published May 13, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

CISA mandated remediation

02CISA 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.

Key dates

03Disclosure timeline

May 13, 2025 CVE published
February 26, 2026 Record updated