Which products and versions are affected by CVE-2016-4523?

Affected: Vtscada (Trihedral). The full list is in the CVE brief.

Is CVE-2016-4523 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 12, 2022.

Is CVE-2016-4523 in the CISA KEV catalog?

Yes. It was added on Apr 15, 2022 with a federal remediation due date of May 6, 2022.

Is there a public exploit for CVE-2016-4523?

Public exploit code is available.

Is there a fix for CVE-2016-4523?

Fixed versions are available, including Vtscada 11.2.02.

How urgently should CVE-2016-4523 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Request A Demo

Vulnerability Intelligence

CVE-2016-4523

HighExploitedPublic exploit

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.

Published Jun 9, 2016 · Updated Apr 22, 2026

Key Facts

Patch immediately

CVE-2016-4523 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Vtscada (Trihedral).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 12, 2022. Public exploit code is available.
EPSS estimates a 31% probability of exploitation in the next 30 days.
Fixed versions are available, including Vtscada 11.2.02.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS (30-day exploit likelihood)

31%

Higher than 98.2% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2016-4523 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Apr 15, 2022	May 6, 2022	Not reported
Industry KEV feed	Jan 12, 2022	May 6, 2022	Not reported
CIRCL KEV	Apr 15, 2022	May 6, 2022	Not reported
ENISA EUVD	Apr 15, 2022	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
VtscadaTrihedral	See advisory	11.2.02

Patched Releases

Vtscada

11.2.02

Timeline

Publicly disclosed
Jun 9, 2016
Added to Industry KEV feed
Jan 12, 2022
Added to CISA KEV
Apr 15, 2022
Added to CIRCL KEV
Apr 15, 2022
Added to ENISA EUVD
Apr 15, 2022
Last updated
Apr 22, 2026

Weakness Type

CWE-125 Out-of-bounds Read

References

advisoryhttps://ics-cert.us-cert.gov/advisories/ICSA-16-159-01
advisory91077
advisoryhttp://www.zerodayinitiative.com/advisories/ZDI-16-405
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report

7 more references in the full CVE brief

FAQ

Common Questions.

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.
Affected: Vtscada (Trihedral). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 12, 2022.
Yes. It was added on Apr 15, 2022 with a federal remediation due date of May 6, 2022.
Public exploit code is available.
Fixed versions are available, including Vtscada 11.2.02.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2016-4523 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.