CVE-2026-80253

Bootloader Execution via Physical Access in ShizenBox2

Published Sep 3, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Shizen Connect
Shizen Connect shizenbox2 (dev-conf)
Vendors & Products Shizen Connect
Shizen Connect shizenbox2 (dev-conf)
Type Values Removed Values Added
Metrics ssvc

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

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
jpcert
Published
Updated
Sep 3, 2026, 1:07 PM
Reserved
Aug 26, 2026, 6:06 AM
Status
Deferred
Published
Sep 3, 2026, 1:06 PM
Modified
Sep 3, 2026, 5:30 PM