What is CVE-2016-4519?

CVE-2016-4519 is a critical-severity vulnerability in Unitronics Visilogic Oplc Ide, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-06-25.

How severe is CVE-2016-4519?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Unitronics Visilogic Oplc Ide

CVE-2016-4519

Stack-based buffer overflow in Unitronics VisiLogic OPLC IDE before 9.8.30 allows remote attackers to execute arbitrary code via a crafted filename field in a ZIP archive in a vlp file.

Vulnerability class: Buffer Overflow

Published 2016-06-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.045 (91.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: 0.000

Affected products

Unitronics Visilogic Oplc Ide

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

www.securityfocus.com/bid/91402 (vdb-entry)
ics-cert.us-cert.gov/advisories/ICSA-16-175-02 (US Government Resource, Third Party Advisory)
zerodayinitiative.com/advisories/ZDI-16-375/ (Vendor Advisory)

Frequently asked questions

What is CVE-2016-4519?: CVE-2016-4519 is a critical-severity vulnerability in Unitronics Visilogic Oplc Ide, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-06-25.
How severe is CVE-2016-4519?: Critical severity. CVSS v3 base score is 9.8 out of 10.