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CVE-2021-43983

26
FAUCET Score

CVE-2021-43983 affects WECON LeviStudioU versions 2019-09-21 and prior, stemming from multiple stack-based buffer overflows when parsing project files. This vulnerability carries a high CVSS score of 7.8, indicating a local attack vector with low complexity, requiring user interaction, and potentially leading to complete compromise of confidentiality, integrity, and availability. While the vulnerability allows for arbitrary code execution, there is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2019-09-21CPE matchmatch criteria
cpe:2.3:a:we-con:levistudiou:*:*:*:*:*:*:*:*

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
2.74%
Probability of exploitation in next 30 days
EPSS Percentile
84.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0274 is in the 85th percentile among its peer group of 11,621 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

cisa.gov / uscert/ics/advisories/icsa-21-343-02
Third Party AdvisoryUS Government Resource
zerodayinitiative.com / advisories/ZDI-22-034
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-035
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-036
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-037
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-038
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-039
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-040
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-041
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-042
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-043
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-044
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-045
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-046
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-047
Third Party AdvisoryVDB Entry