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…

published 2016-06-09 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5510

cvss: 7.5; version 3.1, CNA
cisa kev: Exploited; added 2022-04-15
epss: 31.2%; EPSS 31.2% chance of exploitation in 30 days, percentile 98%
public exploits: 0; none known

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.

Patch / fix

cisa required action Apply updates per vendor instructions.

fixed in 1

trihedral vtscada 11.2.02

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-16-159-01 updated 2025-06-05 cvss 7.5

Trihedral Engineering Limited VTScada Vulnerabilities

Trihedral Engineering VTScada >=8, <11.2.02
affected: mitigation “Help file notes for upgrading VTScada/VTS can be found at: (http://www.trihedral.com/help/#Op_Welcome/Wel_UpgradeNotes.htm)”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Timeline

2016-06-09 Published
2022-04-15 Added to CISA KEV
2022-05-06 CISA patch deadline
2025-02-07 CISA SSVC: exploitation active

Known exploited

Added: 4 y ago (2022-04-15)
Patch by: 2022-05-06 (4 y ago)
Ransomware: Not known
Required action: Apply updates per vendor instructions.
Vendor, product: Trihedral, VTScada (formerly VTS)
CISA name: Trihedral VTScada (formerly VTS) Denial-of-Service Vulnerability

CISA SSVC

Exploitation: Active, exploited in the wild
Automatable: yes
Technical impact: partial
Assessed: 21 mo ago (2025-02-07)

Exploit prediction

31.17% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

CWE-125 Out-of-bounds Read

References

ics-cert.us-cert.gov /advisories/ICSA-16-159-01
third-party-advisory, us-government-resource
securityfocus.com /bid/91077
vdb-entry, broken-link, third-party-advisory
zerodayinitiative.com /advisories/ZDI-16-405
third-party-advisory, vdb-entry
cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4523
government-resource, us-government-resource

Sources

CVE List CVE-2016-4523
NVD CVE-2016-4523

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary