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CVE-2021-43907

CriticalPublished

Visual Studio Code WSL Extension Remote Code Execution Vulnerability

Published: Dec 15, 2021
Updated: Aug 4, 2024
Assigning CNA: microsoft
Evidence observed: Aug 4, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

4.0%

Low · next 30 days

Percentile: 90.4%
Model date: Oct 15, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Visual Studio Code WSL Extension Remote Code Execution Vulnerability

Sources

code-wsl-rcePoC
Proof of Concept for CVE-2021-43891

Responsible use

Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.