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.

No CVSS v4.0

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Gncc Subscribe
Gp5 Subscribe

Project Subscriptions

Vendors Products
Gncc Subscribe
Gp5 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://gncc.com cve-icon cve-icon
http://gp5.com cve-icon cve-icon
https://github.com/BadChemical/IoT-Vulnerability-Research-Public/blob/main/GNCC-GP5-T23/README.md cve-icon cve-icon cve-icon
History

Fri, 05 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Gncc
Gncc gp5
Vendors & Products Gncc
Gncc gp5

Thu, 04 Jun 2026 20:15:00 +0000

Type Values Removed Values Added
Title Physical proximity boot argument injection yields root access in GNCC GP5 firmware

Thu, 04 Jun 2026 18:15:00 +0000

Type Values Removed Values Added
Title Physically Proximate Attackers Bypass Authentication to Gain Root via U‑Boot Boot Argument Injection
Weaknesses CWE-640
CWE-767

Thu, 04 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-288
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 04 Jun 2026 16:15:00 +0000

Type Values Removed Values Added
Title Physically Proximate Attackers Bypass Authentication to Gain Root via U‑Boot Boot Argument Injection
Weaknesses CWE-640
CWE-767

Thu, 04 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
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

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-04T16:06:42.903Z

Reserved: 2026-04-06T00:00:00.000Z

Link: CVE-2026-36175

cve-icon Vulnrichment

Updated: 2026-06-04T16:05:09.203Z

cve-icon NVD

Status : Deferred

Published: 2026-06-04T15:16:51.260

Modified: 2026-06-04T17:16:32.193

Link: CVE-2026-36175

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-05T10:09:28Z

Weaknesses