CVE-2025-42999: SAP NetWeaver Deserialization Vulnerability
Vulnerability summary
CVE-2025-42999 is a critical (CVSS 9.1) Deserialization of Untrusted Data vulnerability in SAP NetWeaver. It is known to be exploited: CISA lists it, first on 15-05-2025. It has been used in ransomware campaigns. EPSS estimates a 12.85% chance of exploitation in the next 30 days, higher than 96.2% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 13-05-2025PublishedVulnerability first disclosed.
- 15-05-2025Added to CISA KEVExploitedSAP NetWeaver Deserialization Vulnerability
- 05-06-2025CISA remediation dueDeadline passedApply mitigations per vendor instructions.
- 11-08-2026Last modifiedVulnerability information updated.
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 metrics
2 scores · 2 sources · 1 version- NVDNIST9.1CriticalCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
12.85%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
Decrease -1.01 pp
From 13.87% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 15-05-2025
- Federal due date
- 05-06-2025
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
CISA 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. nvd.nist.gov/vuln/detail/CVE-2025-42999
Public exploits
1 foundExploit Reference (onapsis.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Sap1 product
- netweaver7.5
Sap_se1 product
- sap netweaver (visual composer development server)VCFRAMEWORK 7.50
2 vendors · 2 products
References
4 links- me.sap.com/notes/3604119Permissions Required
- url.sap/sapsecuritypatchdayVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-42999Government ResourceUS Government Resource
- onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/ExploitThird Party Advisory