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CVE-2025-42999

Insecure Deserialization in SAP NetWeaver (Visual Composer development server)

Basic Information

CVE State
PUBLISHED
Reserved Date
April 16, 2025
Published Date
May 13, 2025
Last Updated
May 17, 2025
Vendor
SAP_SE
Product
SAP NetWeaver (Visual Composer development server)
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.
Tags
cisa

CVSS Scores

CVSS v3.1

9.1 - CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS Score

Score
14.71% (Percentile: 94.11%) as of 2025-05-30

SSVC Information

Exploitation
active
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (added 2025-05-14 00:00:00 UTC) Source
Seen in APT Campaigns
Yes (added 2025-05-14 00:00:00 UTC) (China-Nexus) Source

References

https://me.sap.com/notes/3604119 https://url.sap/sapsecuritypatchday

Known Exploited Vulnerability Information

Source Added Date
TheHackerNews 2025-05-14 00:00:00 UTC

Recent Mentions

This consolidated threat advisory [TLP:CLEAR] is provided to support defenders in their assessment of exposure and compromise against the active mass exploitation of SAP security vulnerabilities CVE-2025-31324 and CVE-2025-42999. The post Threat Briefing Report: Critical SAP Vulnerabilities (CVE-2025-31324 and CVE-2025-42999) Under Active Mass Exploitation appeared first on Onapsis.

CISA Adds Three Known Exploited Vulnerabilities to Catalog

Source: All CISA Advisories • Published: 2025-05-15 12:00:00 UTC

CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation.  CVE-2024-12987 DrayTek Vigor Routers OS Command Injection Vulnerability CVE-2025-4664 Google Chromium Loader Insufficient Policy Enforcement Vulnerability CVE-2025-42999 SAP NetWeaver Deserialization Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise.  Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information.  Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. 
On May 13, 2025, SAP released a security advisory for CVE-2025-42999, a deserialization of untrusted data vulnerability in the NetWeaver Visual Composer component. This follows a previously disclosed vulnerability (CVE-2025-31324) from April 24, 2025, an unrestricted file upload vulnerability impacting the NetWeaver Visual component.  While SAP did not confirm that CVE-2025-42999 was being exploited, Onapsis ... Follow-up: Second Zero-Day Vulnerability Impacting SAP Netweaver Exploited in the Wild (CVE-2025-42999)

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Used in China-Nexus APT Campaign

  • Added to KEVIntel