WECON Technology PI Studio HMI versions 4.1.9 and prior and PI Studio versions 4.2.34 and prior lacks proper validation of user-supplied da…

published 2019-03-27 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-6698

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits: 0; none known

WECON Technology PI Studio HMI versions 4.1.9 and prior and PI Studio versions 4.2.34 and prior lacks proper validation of user-supplied data, which may result in a read past the end of an allocated object.

Vendor advisories

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

cisa ICSA-18-277-01 updated 2021-11-02 cvss 3.3

WECON PI Studio (Update A)

WECON PI Studio <= 4.2.125 WECON PI Studio HMI <= 4.1.9
affected: mitigation “WECON has verified these vulnerabilities but has not yet released an updated version. CISA is working with WECON and will update this advisory once an updated version is released.”

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

1.47% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

WECON WECON Technology PI Studio HMI

Classification

Weakness

CWE-125 Out-of-bounds Read

References

ics-cert.us-cert.gov /advisories/ICSA-18-277-01
third-party-advisory, us-government-resource

Sources

CVE List CVE-2018-14814
NVD CVE-2018-14814

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