# CVE-2026-41446: WattBox 800 & 820 Series < 2.10.0.0 RCE via Diagnostic Endpoints

> Attackers can execute arbitrary commands as root on WattBox devices by using plaintext MAC and service tag credentials from the device label.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Apr 2026
- **Updated:** 14 May 2026
- **Also known as:** GHSA-f7pq-m4g9-frrj

## What is CVE-2026-41446?

CVE-2026-41446 is a critical vulnerability in Snap One, LLC WattBox 800, published on 28 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Snap One WattBox 800 and 820 series firmware versions prior to 2.10.0.0 contain undisclosed diagnostic HTTP endpoints that require only the device MAC address and service tag for authentication, both of which are printed in plaintext on the physical device label. Attackers with access to the device label or documentation containing these values can authenticate to the several endpoints and execute arbitrary commands as root on the device.

Weakness: CWE-912 (Hidden Functionality), CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2026-41446?


## How do I fix CVE-2026-41446?

No fix has been published for CVE-2026-41446 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-41446 being exploited?

There is no known exploitation of CVE-2026-41446 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-41446 and fix it if it is affected.

What it is: CVE-2026-41446 is a critical vulnerability in Snap One, LLC WattBox 800, published on 28 Apr 2026. 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-2026-41446 in the wild and no public exploit code.

Affected product: Snap One, LLC WattBox 800. 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-2026-41446/ (Markdown: https://insights.sbomify.com/CVE-2026-41446/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-41446
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41446
- OSV: https://osv.dev/vulnerability/CVE-2026-41446

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-41446/
Summaries are generated and may contain mistakes; the official description above is the record.