CVE-2025-42999
Published 2025-05-13 · Updated 2026-08-11 · Source cna@sap.com
Summary
CVE-2025-42999 is a critical-severity (CVSS 9.1) vulnerability in SAP NetWeaver. CISA added it to the Known Exploited Vulnerabilities catalog on May 15, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 5, 2025. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. SAP has 14 vulnerabilities in the KEV catalog, 3 of them linked to ransomware.
All 14 known-exploited SAP vulnerabilities →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.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: SAP — NetWeaver
Name: SAP NetWeaver Deserialization Vulnerability
Date added: 2025-05-15 · Due: 2025-06-05
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.

