explaingit

hexo141/rootme

Analysis updated 2026-05-18

81JavaScriptAudience · researcherComplexity · 5/5Setup · hard

TLDR

A web-based demonstration chaining two real Android Firefox CVEs to show a shell-to-kernel-privilege-escalation exploit, for research use on your own devices only.

Mindmap

mindmap
  root((Rootme))
    What it does
      Chained browser exploit demo
      Targets Android Firefox
      Uses two named CVEs
    Exploit chain
      JIT type confusion CVE
      Kernel privilege escalation CVE
    Warnings
      Own devices only
      Backup data first
      Device may crash
    Access
      Hosted demo site
      No local setup docs

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Study how a Firefox JIT type confusion bug can be chained with a kernel bug for privilege escalation.

USE CASE 2

Research Android browser security by observing the exploit through the hosted demo page.

USE CASE 3

Reference the linked CVEs when studying real-world browser vulnerability chains.

What is it built with?

JavaScript

How does it compare?

hexo141/rootmeterkelg/workshybrunosimon/small-world
Stars818182
LanguageJavaScriptJavaScriptJavaScript
Last pushed2020-03-152021-11-30
MaintenanceDormantDormant
Setup difficultyhardeasyeasy
Complexity5/51/52/5
Audienceresearcherdeveloperdesigner

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1day+

README gives no local setup instructions, only a hosted demo link, and warns the exploit can crash the target device.

The README does not state a license.

In plain English

Rootme is a small collection of web pages that demonstrate a chained exploit against the Firefox browser on Android devices. According to the README, it uses a Firefox JIT type confusion vulnerability, tracked as CVE-2026-23274, to gain initial code execution, or a shell, on the device, and then chains that into a separate kernel vulnerability, CVE-2026-43499, to escalate privileges further on the system. The README is short and mostly consists of a warning. It states this project is for learning and research only, that it should only be run on a device you personally own, and that you should back up your data first, because the exploitation process can crash the device, force a restart, or cause data loss. The author states they are not responsible for any consequences from misuse of the project. There is also a link to a live deployed version of the site, hosted at a subdomain, presumably so the vulnerability can be tested or observed directly through a browser rather than by setting up the code locally. The repository itself does not include setup instructions, a license file, or any description of its internal code structure in the README, so beyond the two referenced CVEs and the live demo link, there is little else documented about how the project is built or how to run it yourself. Given the subject matter, this is squarely a security research and vulnerability demonstration project rather than a general purpose tool, and it should only be used in line with its own stated warning: on devices you own, for learning purposes, with an understanding that things can go wrong during testing.

Copy-paste prompts

Prompt 1
Explain in plain terms what a JIT type confusion vulnerability like CVE-2026-23274 generally is.
Prompt 2
Explain what privilege escalation means in the context of a Firefox to kernel exploit chain.
Prompt 3
Summarize the safety warnings in this README and what precautions they imply.
Prompt 4
Explain what it means for an exploit to give you a shell versus escalating privileges further.

Frequently asked questions

What is rootme?

A web-based demonstration chaining two real Android Firefox CVEs to show a shell-to-kernel-privilege-escalation exploit, for research use on your own devices only.

What language is rootme written in?

Mainly JavaScript. The stack also includes JavaScript.

What license does rootme use?

The README does not state a license.

How hard is rootme to set up?

Setup difficulty is rated hard, with roughly 1day+ to a first successful run.

Who is rootme for?

Mainly researcher.

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