An improper physical access control issue exists in ShizenBox2 (dev-conf). If exploited, an attacker with physical access to the product may execute bootloader commands without authentication.

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

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 v2

This CVE is not in the KEV list.

The EPSS score is 0.0033.

Exploitation none

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
Shizen Connect Inc. ShizenBox2 (dev-conf) unaffected
Version Status Constraints
0 affected ≤ v1.0.10

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://jvn.jp/en/jp/JVN91715694/ cve-icon cve-icon
https://www.se-digital.net/wp-content/uploads/2026/08/CVE-2026-80253.pdf cve-icon cve-icon
History

Thu, 03 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 03 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Title Bootloader Execution via Physical Access in ShizenBox2

Thu, 03 Sep 2026 09:00:00 +0000

Type Values Removed Values Added
Description An improper physical access control issue exists in ShizenBox2 (dev-conf). If exploited, an attacker with physical access to the product may execute bootloader commands without authentication.
Weaknesses CWE-1263
References
Metrics cvssV3_0

{'score': 6.8, 'vector': 'CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-09-03T13:07:59.048Z

Reserved: 2026-08-26T06:06:54.184Z

Link: CVE-2026-80253

cve-icon Vulnrichment

Updated: 2026-09-03T13:07:52.619Z

cve-icon NVD

Status : Received

Published: 2026-09-03T13:06:10.587

Modified: 2026-09-03T13:06:10.587

Link: CVE-2026-80253

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T13:00:04Z

Weaknesses