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CVE-2021-22666

23
FAUCET Score

CVE-2021-22666 describes a stack-based buffer overflow vulnerability in Fatek FvDesigner versions 1.5.76 and prior. An attacker can exploit this by crafting a malicious project file, potentially leading to arbitrary code execution on the affected system. With a CVSS score of 7.8 (High), this vulnerability requires user interaction (UI:R) and local access (AV:L), but successful exploitation grants high impact to confidentiality, integrity, and availability (C:H/I:H/A:H). Currently, there is no public exploit code available (Metasploit, Nuclei, ExploitDB: None), and the vulnerability shows no signs of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.76CPE matchmatch criteria
cpe:2.3:a:fatek:fvdesigner:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.11%
Probability of exploitation in next 30 days
EPSS Percentile
62.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0111 is in the 60th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

us-cert.cisa.gov / ics/advisories/icsa-21-056-02
Third Party AdvisoryUS Government Resource