# CVE-2025-40596: SonicWall SMA 100 Series

- Exploited (CISA KEV): no
- Published: 2025-07-23
- CVSS: 7.3 HIGH (v3.1)
- EPSS: 45.3% (99th percentile)
- CWE: CWE-121

A Stack-based buffer overflow vulnerability in the SMA100 series web interface allows remote, unauthenticated attacker to cause Denial of Service (DoS) or potentially results in code execution.

## 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 | Rule published | 2025-08-24 | 32 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2025-08-24 · new · rule 200011105
  > Added: signature 200011105 "SonicWall Stack-Based Buffer Overflow" (Buffer Overflow, risk High), systems: Other Web Server. References: CVE-2025-40596.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"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-2025-40596 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-40596