Risk Letters

Exploited vulnerability

CVE-2025-42999

TLP:CLEAR

SAP NetWeaver Deserialization Vulnerability

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.

Facts

  • Vendor: SAP
  • Product: NetWeaver
  • CVSS: 9.1
  • EPSS (probability of exploitation within 30 days): 12.9 %
  • On CISA's Known Exploited Vulnerabilities list since: 15 May 2025
  • First known exploitation: 15 May 2025
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 5 June 2025
  • Weakness: CWE-502
  • First seen by Risk Letters: 15 May 2025

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Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD