A Heap-based Buffer Overflow issue was discovered in WECON LeviStudio HMI.

published 2017-12-20 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7901

cvss: 8.6; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.9%; EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits: 0; none known

A Heap-based Buffer Overflow issue was discovered in WECON LeviStudio HMI. The heap-based buffer overflow vulnerability has been identified, which may allow remote code execution.

Vendor advisories

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

cisa ICSA-17-353-05 updated 2017-12-19 cvss 7.3

WECON Technology Co., Ltd. LeviStudio HMI Editor

WECON LeviStudio HMI editor
affected: mitigation “WECON recommends that users update to the latest version, which can be found at the following location:”

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

Exploit prediction

1.94% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.6	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
NVD	2.0	9.0	AV:N/AC:L/Au:N/C:P/I:P/A:C

Affected products

n/a WECON Technology Co., Ltd. LeviStudio HMI

Classification

Weakness

CWE-122 Heap-based Buffer Overflow
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

ics-cert.us-cert.gov /advisories/ICSA-17-353-05
third-party-advisory, us-government-resource

Sources

CVE List CVE-2017-16717
NVD CVE-2017-16717

Fencer Vulns 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