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

Source: https://junglewise.ai/threats/cve-2016-4523-trihedral-vtscada-formerly-vts-denial-of-service-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-04-15. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2016-4523 · Severity: critical · CVSS 7.5 · Exploited in the wild · Published 2022-04-15

The WAP interface in Trihedral VTScada allows remote attackers to cause a denial of service via an out-of-bounds read that leads to an application crash. The vulnerability affects versions 8.x through 11.x prior to 11.2.02.

## Quick answers

**Is CVE-2016-4523 exploited in the wild?** Yes. CVE-2016-4523 is known to be exploited in the wild, first recorded on 15 April 2022. Treat it as urgent.

**How severe is CVE-2016-4523?** Critical severity, with a CVSS score of 7.5, published 15 April 2022.

**Which products and versions are affected?** Trihedral VTScada 8.x through 11.x before 11.2.02.

**Is there a fix for CVE-2016-4523?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2016-4523 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2016-4523?** Check whether you run Trihedral VTScada (formerly VTS). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Trihedral VTScada 8.x through 11.x before 11.2.02

## Timeline

- 2016-06-07: disclosed: Initial advisory ICSA-16-159-01 published by ICS-CERT
- 2022-04-15: kev added: Added to CISA Known Exploited Vulnerabilities Catalog