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CVE-2025-42999

SAP NetWeaver Deserialization

9.1 CRITICALActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 12.7%
  1. Published12 May 2025
  2. Added to CISA KEV15 May 2025
  3. Remediation due5 Jun 2025
Actively exploited (CISA KEV)

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.

Added to KEV: 15 May 2025Federal remediation due: 5 Jun 2025Used in ransomware

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredHigh
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

SAP Netweaver7.5

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

References

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Frequently asked

Is CVE-2025-42999 being actively exploited?

Yes. CVE-2025-42999 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 15 May 2025. It has been used in ransomware campaigns.

How severe is CVE-2025-42999?

CVE-2025-42999 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 12.7% probability of exploitation.

Which products are affected by CVE-2025-42999?

Affected products include SAP Netweaver.

How do I fix CVE-2025-42999?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-42999 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.