CVE-2025-42999: SAP NetWeaver Deserialization Vulnerability

CVE-2025-42999 · Severity: critical · CVSS 9.1 · Exploited in the wild · Published 2025-05-15

SAP NetWeaver Visual Composer Metadata Uploader contains a deserialization vulnerability (CWE-502). A privileged attacker can upload malicious content that, when deserialized, allows for the complete compromise of the host system's confidentiality, integrity, and availability.

Technologies: SAP NetWeaver. Vendors: SAP.

Quick answers

Is CVE-2025-42999 exploited in the wild?
Yes. CVE-2025-42999 is known to be exploited in the wild, first recorded on 15 May 2025. Treat it as urgent.
How severe is CVE-2025-42999?
Critical severity, with a CVSS score of 9.1, published 15 May 2025.
Which products and versions are affected?
SAP SE NetWeaver Visual Composer Metadata Uploader 7.5.
Is there a fix for CVE-2025-42999?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-42999 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-42999?
Check whether you run SAP NetWeaver. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • SAP SE NetWeaver Visual Composer Metadata Uploader 7.5

Timeline

  • 2025-05-12: disclosed: Initial disclosure by SAP SE
  • 2025-05-15: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2025-05-15: exploited: Reported as exploited in the wild

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