What is CVE-2021-22666?

CVE-2021-22666 is a high-severity vulnerability in Fatek Fvdesigner, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2021-03-03.

How severe is CVE-2021-22666?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Fatek Fvdesigner

CVE-2021-22666

Fatek FvDesigner Version 1.5.76 and prior is vulnerable to a stack-based buffer overflow while project files are being processed, allowing an attacker to craft a special project file that may permit arbitrary code execution.

Vulnerability class: Buffer Overflow

Published 2021-03-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (65.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.000

Affected products

Fatek Fvdesigner
Fatek Fvdesigner — versions Version 1.5.76 and prior

Weakness classification (CWE)

References

us-cert.cisa.gov/ics/advisories/icsa-21-056-02 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2021-22666?: CVE-2021-22666 is a high-severity vulnerability in Fatek Fvdesigner, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2021-03-03.
How severe is CVE-2021-22666?: High severity. CVSS v3 base score is 7.8 out of 10.