CVE-2018-6242

MEDIUM

NVIDIA Tegra BootROM RCM - Buffer Overflow via Physical USB Access

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 6 public exploits for CVE-2018-6242. PoCs published by DavidBuchanan314, reswitched, austinhartzheim.

AI-analyzed exploit summary This repository contains a functional Android app (NXLoader) designed to exploit CVE-2018-6242, a vulnerability in Nintendo Switch's USB control request handling. The exploit leverages the Fusée Gelée coldboot vulnerability to execute arbitrary payloads via USB.

Description

Some NVIDIA Tegra mobile processors released prior to 2016 contain a buffer overflow vulnerability in BootROM Recovery Mode (RCM). An attacker with physical access to the device's USB and the ability to force the device to reboot into RCM could exploit the vulnerability to execute unverified code.

Exploits (6)

nomisec WORKING POC 552 stars
by DavidBuchanan314 · poc
https://github.com/DavidBuchanan314/NXLoader

This repository contains a functional Android app (NXLoader) designed to exploit CVE-2018-6242, a vulnerability in Nintendo Switch's USB control request handling. The exploit leverages the Fusée Gelée coldboot vulnerability to execute arbitrary payloads via USB.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Nintendo Switch (Tegra X1 USB stack)
No auth needed
Prerequisites: Physical access to the Nintendo Switch · Switch in RCM mode · Android device with USB OTG support
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 21 stars
by reswitched · poc
https://github.com/reswitched/rcm-modchips

This repository contains a proof-of-concept exploit for CVE-2018-6242 (Fusée Gelée/ShofEL2), targeting the Nintendo Switch's RCM mode via a USB-based buffer overflow. The code initializes a USB host controller, validates the connected device, and triggers the vulnerability by sending a malformed USB control request.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Nintendo Switch (RCM mode)
No auth needed
Prerequisites: Physical access to the Nintendo Switch in RCM mode · GreatFET hardware or compatible USB host controller
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 4 stars
by austinhartzheim · poc
https://github.com/austinhartzheim/fusee-gelee

This is a Rust implementation of the Fusée Gelée exploit (CVE-2018-6242) targeting NVIDIA Tegra processors. It leverages a USB buffer overflow vulnerability to achieve arbitrary code execution on vulnerable devices.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: NVIDIA Tegra processors (e.g., Nintendo Switch)
No auth needed
Prerequisites: Physical USB access to the target device · Device in RCM (Recovery Mode)
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 1 stars
by Resi-le · poc
https://github.com/Resi-le/NXLoader

This repository contains an Android application (NXLoader) that exploits CVE-2018-6242 to inject payloads into Nintendo Switch devices in RCM mode. The exploit leverages the Fusée Gelée vulnerability to execute arbitrary code on the Switch.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Nintendo Switch (Tegra X1 chipset) in RCM mode
No auth needed
Prerequisites: Nintendo Switch in RCM mode · USB connection to Android device
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec NO CODE 1 stars
by nikameru · poc
https://github.com/nikameru/nxboot
nomisec WORKING POC
by Swiftloke · poc
https://github.com/Swiftloke/fusee-toy

This repository contains a functional proof-of-concept exploit for CVE-2018-6242 (Fusée Gelée), targeting the Nintendo Switch's bootrom vulnerability. The exploit constructs a payload to trigger a stack smash via USB, leveraging the vulnerability to execute arbitrary code.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Nintendo Switch bootrom (pre-2018 versions)
No auth needed
Prerequisites: Physical access to the Nintendo Switch in RCM mode · USB connection to the device
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Vendor Advisory x_refsource_confirm
http://nvidia.custhelp.com/app/answers/detail/a_id/4660

Scores

CVSS v3 6.8
EPSS 0.0274
EPSS Percentile 84.3%
Attack Vector PHYSICAL
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (1)
nvidia/tegra_bootrom_rcm
Published May 01, 2018
Tracked Since Feb 18, 2026