HOMEVULNERABILITIESCVE-2021-32939
HIGH

CVE-2021-32939

CWE-787Published: August 11, 2021· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2021-32939 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

fatek1 product(s)
fvdesigner
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://us-cert.cisa.gov/ics/advisories/icsa-21-217-02
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-21-1028/
ADVISORYhttps://us-cert.cisa.gov/ics/advisories/icsa-21-217-02
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-21-1028/

All References (4)

→
https://us-cert.cisa.gov/ics/advisories/icsa-21-217-02Third Party Advisory · US Government Resource
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1028/Third Party Advisory · VDB Entry
→
https://us-cert.cisa.gov/ics/advisories/icsa-21-217-02Third Party Advisory · US Government Resource
→
https://www.zerodayinitiative.com/advisories/ZDI-21-1028/Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2021-32939
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedAug 11, 2021

Related CVEs (CWE-787)

CVE-2009-2466
10.0
CVE-2026-4746
10.0
CVE-2015-0235
10.0
CVE-2018-10718
10.0
CVE-2026-42369
10.0
CVE-2004-0978
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-32939 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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