# CVE-2025-42999: SAP NetWeaver Deserialization Vulnerability

- Exploited (CISA KEV): yes, added 2025-05-15, known ransomware use
- Published: 2025-05-13
- CVSS: 9.1 CRITICAL (v3.1)
- EPSS: 12.9% (96th percentile)
- CWE: CWE-502

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2025-06-09 | 27 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2025-06-09 · new · rule 24134c41c3e940daa973b4b95f57b448 · default Block
  > SAP NetWeaver - Remote Code Execution - CVE:CVE-2025-42999. Previous action: Log. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-06-09-waf-release/

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2025-42999 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-42999