# CVE-2021-47662: Unauthenticated remote shutdown of the cobot

> Unauthenticated remote attackers can shut down Franka Emika robots via HTTPS due to missing authorization, causing denial of service.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Apr 2025
- **Updated:** 24 Apr 2025
- **Also known as:** GHSA-c466-pgm8-c4p5

## What is CVE-2021-47662?

CVE-2021-47662 is a high-severity missing authorization vulnerability in Franka Emika Robot, published on 24 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Due to missing authorization an unauthenticated remote attacker can cause a DoS attack by connecting via HTTPS and triggering the shutdown button.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2021-47662?


## How do I fix CVE-2021-47662?

No fix has been published for CVE-2021-47662 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47662 being exploited?

There is no known exploitation of CVE-2021-47662 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47662 and fix it if it is affected.

What it is: CVE-2021-47662 is a high-severity missing authorization vulnerability in Franka Emika Robot, published on 24 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-47662 in the wild and no public exploit code.

Affected product: Franka Emika Robot. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-47662/ (Markdown: https://insights.sbomify.com/CVE-2021-47662/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47662
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47662
- OSV: https://osv.dev/vulnerability/CVE-2021-47662

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-47662/
Summaries are generated and may contain mistakes; the official description above is the record.