# CVE-2025-33073: Microsoft Windows SMB Client Improper Access Control Vulnerability

- Exploited (CISA KEV): yes, added 2025-10-20
- Published: 2025-06-10
- CVSS: 8.8 HIGH (v3.1)
- EPSS: 82.7% (100th percentile)
- CWE: CWE-284

Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.

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

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| 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 | — | — |

"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.

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