FATEK Automation FvDesigner, Versions 1.5.88 and prior is vulnerable to an out-of-bounds write while processing project files, allowing an…

published 2021-08-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19660

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits: 0; none known

FATEK Automation FvDesigner, Versions 1.5.88 and prior is vulnerable to an out-of-bounds write while processing project files, allowing an attacker to craft a project file that may permit arbitrary code execution.

Vendor advisories

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

cisa ICSA-21-217-02 updated 2021-08-05 cvss 7.8

FATEK Automation FvDesigner

FATEK Automation FvDesigner <= 1.5.88
affected: mitigation “Do not click web links or open unsolicited attachments in email messages.” us-cert.cisa.gov

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

1.56% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

n/a FATEK Automation FvDesigner

Classification

Weakness

CWE-787 Out-of-bounds Write

References

us-cert.cisa.gov /ics/advisories/icsa-21-217-02
third-party-advisory, us-government-resource
zerodayinitiative.com /advisories/ZDI-21-1028/
third-party-advisory, vdb-entry

Sources

CVE List CVE-2021-32939
NVD CVE-2021-32939

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