Known exploited vulnerability
CVE-2025-42999
The short answer
CVE-2025-42999 affects SAP_SE SAP NetWeaver (Visual Composer development server) and is rated critical (CVSS 9.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-05-15: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-502.
Severity
9.1 critical
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since May 15, 2025
Federal due date Jun 5, 2025
EPSS, next 30 days
13%
Higher than 96% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
SAP NetWeaver (Visual Composer development server). NVD's record lists the exact affected versions.
References
- me.sap.com/notes/3604119 Permissions Required
- url.sap/sapsecuritypatchday Vendor Advisory
- onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/ ExploitThird Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-42999 US Government Resource
Questions
Is CVE-2025-42999 being exploited?
Yes. CISA added CVE-2025-42999 to its Known Exploited Vulnerabilities catalog on 2025-05-15, with a federal remediation due date of 2025-06-05. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2025-42999?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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