SAP · NetWeaver
CVE-2025-42999
Insecure Deserialization in SAP NetWeaver (Visual Composer development server)
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.
CISA: 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.
What 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.
Deadline for US federal agencies: June 5, 2025
- Added to the CISA list
- May 15, 2025
- Published
- May 13, 2025
- Severity
- Critical 9.1 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 13% in the top 3.7% of all known vulnerabilities
- Weakness
- CWE-502
- More details
- NVD · CVE.org · CISA
All references (2)
More exploited flaws from SAP
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Apr 29, 2025 | Unrestricted File Upload | NetWeaver | Critical 10.0 | 99.5% |
| Mar 19, 2025 | Directory Traversal | NetWeaver | High 7.5 | 95% |
| Jun 9, 2022 | SQL Injection | NetWeaver | Critical 9.8 | 72% |
| Jun 9, 2022 | Information Disclosure | NetWeaver | Medium 5.3 | 52% |
| Jun 9, 2022 | Unrestricted File Upload | NetWeaver | Critical 9.9 | 37% |
| Nov 3, 2021 | Remote Code Execution | NetWeaver | Critical 10.0 | 18% |
| Nov 3, 2021 | Directory Traversal | NetWeaver | High 7.5 | 47% |
| Nov 3, 2021 | XML External Entity (XXE) | NetWeaver | Medium 6.5 | 24% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.