Generic IO & Memory Access driver for PCs provided by TOSHIBA CORPORATION and Dynabook Inc. exposes its IOCTL with insufficient access control. A logged-in user with no administrative privilege may access physical memory.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Dynabook
  • Generic Io & Memory Access Driver
Toshiba Corporation
  • Generic Io & Memory Access Driver

No data.

No data.

References
Link Providers
https://corporate.jp.sharp/info/product-security/advisory-list/2026-003/ cve-icon
https://global.sharp/corporate/info/product-security/advisory-list/2026-003/ cve-icon
https://jvn.jp/en/vu/JVNVU91051826/ cve-icon
History

Fri, 26 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Dynabook
Dynabook generic Io & Memory Access Driver
Toshiba Corporation
Toshiba Corporation generic Io & Memory Access Driver
Vendors & Products Dynabook
Dynabook generic Io & Memory Access Driver
Toshiba Corporation
Toshiba Corporation generic Io & Memory Access Driver

Thu, 25 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Thu, 25 Jun 2026 09:30:00 +0000

Type Values Removed Values Added
Title Insufficient IOCTL Access Control Exposes Physical Memory to Non-Admin Users

Thu, 25 Jun 2026 08:00:00 +0000

Type Values Removed Values Added
Description Generic IO & Memory Access driver for PCs provided by TOSHIBA CORPORATION and Dynabook Inc. exposes its IOCTL with insufficient access control. A logged-in user with no administrative privilege may access physical memory.
Weaknesses CWE-782
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published: 2026-06-25T07:03:51.101Z

Updated: 2026-06-25T12:32:05.914Z

Reserved: 2026-06-19T02:06:36.536Z

Link: CVE-2026-56129

cve-icon Vulnrichment

Updated: 2026-06-25T12:31:26.096Z

cve-icon NVD

No data.

cve-icon Redhat

No data.