What is CVE-2016-4523?

CVE-2016-4523 is a high-severity vulnerability in Trihedral Vtscada, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2016-06-09.

How severe is CVE-2016-4523?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2016-4523 known to be exploited?

Yes. CVE-2016-4523 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-04-15), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.

Out-of-bounds Read in Trihedral Vtscada

CVE-2016-4523

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.

Vulnerability class: Buffer Overflow

Published 2016-06-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.312 (98.3th percentile), scored 2026-10-18.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.312 · newest: 0.312 · change: 0.000

Affected products

Trihedral Vtscada

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-04-15. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-06.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

ics-cert.us-cert.gov/advisories/ICSA-16-159-01 (US Government Resource, Third Party Advisory)
www.securityfocus.com/bid/91077 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
www.zerodayinitiative.com/advisories/ZDI-16-405 (VDB Entry, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2016-4523?: CVE-2016-4523 is a high-severity vulnerability in Trihedral Vtscada, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2016-06-09.
How severe is CVE-2016-4523?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2016-4523 known to be exploited?: Yes. CVE-2016-4523 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-04-15), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.