# CVE-2016-4523: Trihedral VTScada (formerly VTS) Denial-of-Service Vulnerability

- Exploited (CISA KEV): yes, added 2022-04-15
- Published: 2016-06-09
- CVSS: 7.5 HIGH (v3.1)
- EPSS: 31.2% (98th percentile)
- CWE: CWE-119

The WAP interface in Trihedral VTScada (formerly VTS) 8.x through 11.x before 11.2.02 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via unspecified vectors.

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

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

"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-2016-4523 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2016-4523