CVE-2025-42999—SAP NetWeaver Deserialization Vulnerability

Vulnerability Name

SAP NetWeaver Deserialization Vulnerability

Description

SAP NetWeaver Visual Composer Metadata Uploader contains a deserialization vulnerability that allows a privileged attacker to compromise the confidentiality, integrity, and availability of the host system by deserializing untrusted or malicious content.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

KNOWN

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.

Additional Notes

• 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

Related News Articles

• Exploit for critical SAP Netweaver flaws released (CVE-2025-31324, CVE-2025-42999)August 20, 2025
• Public Exploit for Chained SAP Flaws Exposes Unpatched Systems to Remote Code ExecutionAugust 19, 2025

Related Weaknesses

• CWE-502