# CVE-2023-48426: Chromecast Bootloader & Kernel-level code-execution including compromise of user-data

> An attacker with physical UART access can bypass authentication to execute arbitrary code in the bootloader and kernel, compromising user data.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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:** 5 Apr 2024
- **Updated:** 28 Mar 2025
- **Also known as:** GHSA-g36v-5299-38pr

## What is CVE-2023-48426?

CVE-2023-48426 is a critical missing authorization vulnerability in Google Chromecast, published on 5 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

u-boot bug that allows for u-boot shell and interrupt over UART

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2023-48426?

It affects 1 product.


Products: Google Chromecast Firmware.

## How do I fix CVE-2023-48426?

No fix has been published for CVE-2023-48426 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-48426 being exploited?

There is no known exploitation of CVE-2023-48426 in the wild and no public exploit code.

## Other vulnerabilities in Google Chromecast

- [CVE-2023-48417](https://insights.sbomify.com/CVE-2023-48417/): Missing authorization in Android (critical 9.8)
- [CVE-2023-48424](https://insights.sbomify.com/CVE-2023-48424/): Privilege escalation in Android (critical 9.8)
- [CVE-2023-48425](https://insights.sbomify.com/CVE-2023-48425/): Code injection in Android (critical 9.8)
- [CVE-2023-6181](https://insights.sbomify.com/CVE-2023-6181/): Code injection in Android (critical 9.8)
- [CVE-2018-12716](https://insights.sbomify.com/CVE-2018-12716/): Information disclosure in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-48426 and fix it if it is affected.

What it is: CVE-2023-48426 is a critical missing authorization vulnerability in Google Chromecast, published on 5 Apr 2024. 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-2023-48426 in the wild and no public exploit code.

Affected product: Google Chromecast. 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-2023-48426/ (Markdown: https://insights.sbomify.com/CVE-2023-48426/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-48426
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-48426
- OSV: https://osv.dev/vulnerability/CVE-2023-48426

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-48426/
Summaries are generated and may contain mistakes; the official description above is the record.