---
id: "CVE-2016-4523"
kind: "vulnerability"
aliases: ["CVE-2016-4523"]
title: "Trihedral VTScada (formerly VTS): Trihedral VTScada (formerly VTS) Denial-of-Service Vulnerability"
severity: "high"
cvss: 7.5
epss: 0.31167
exploited: true
status: "open"
category: "vendor"
products: [{"name": "Trihedral VTScada (formerly VTS)", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "industrial-control", "scada", "vendor", "vtscada"]
not_affected_if: ["no-wap-interface-exposed"]
published_at: "2016-06-09T10:59:04+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2016-4523", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2016-4523", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-4523", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

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

Trihedral VTScada (formerly VTS) has a flaw in its WAP interface that lets remote attackers crash or stall it with a denial-of-service. CISA lists it as actively exploited.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Trihedral VTScada (formerly VTS) affected ? fixed ?

## Fix

Apply the updates per vendor instructions, as CISA requires; the sources do not name the fixed version.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2016-4523
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2016-4523
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2016-4523

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_