CVE WatchAug 11, 2026

CVE-2025-42999

SAP NetWeaver Deserialization Vulnerability

CVSS

9.1

Critical

EPSS

13.9%

p96

KEV

YES

May 15, 2025

Exploit Today

0-100

Published: May 13, 2025 · Last modified: Aug 11, 2026 · CWE-502

EPSS · 30d

11.2%EPSS · 30 days13.9%

2026-08-022026-08-31

KEV catalog record

Product

SAP / NetWeaver

Vulnerability

SAP NetWeaver Deserialization Vulnerability

Added to KEV

May 15, 2025

Remediate by

Jun 5, 2025

Known ransomware use

Yes

Summary 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.

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.

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

Technical 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.

Official references

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