CVE-2026-36175

MEDIUM

GNCC GP5 v7.1.76 - Authentication Bypass via U-Boot Kernel Boot Argument Injection

Title source: llm

Description

An issue in the U-Boot component of GNCC GP5 v7.1.76 allows physically-proximate attackers to bypass authentication and gain root access via interrupting the boot sequence and injecting a crafted string into the kernel boot arguments.

References (3)

Core 3

Core References

http://gncc.com

http://gp5.com

https://github.com/BadChemical/IoT-Vulnerability-Research-Public/blob/main/GNCC-GP5-T23/README.md

View Writeup ZIP pw:eip

Scores

CVSS v3 6.8

EPSS 0.0022

EPSS Percentile 12.9%

Attack Vector PHYSICAL

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-20 CWE-288

Status published

Published Jun 04, 2026

Tracked Since Jun 04, 2026