Vulnerability-Lookup

JVNDB-2026-020742

Vulnerability from jvndb - Published: 2026-06-26 00:52 - Updated:2026-06-26 00:52

Severity

5.5 (Medium) - cvssV3_0 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Summary

Generic IO & Memory Access driver for TOSHIBA and Dynabook PCs exposes its IOCTL with insufficient access control

Details

Generic IO & Memory Access driver is part of a utility to configure BIOS/Supervisor passwords from within Windows. This driver is installed on PCs provided by TOSHIBA CORPORATION and Dynabook Inc. between 2009 and 2016. The driver contains the following vulnerability.

Exposed IOCTL with Insufficient Access Control (CWE-782) - CVE-2026-56129

The CVSS assessment above assumes that a user with no administrative privilege accesses physical memory.

Akshit Yadav (valium) reported this vulnerability to the developer. The developer reported the case to JPCERT/CC to notify users of the solution through JVN.

References

Type

URL

	JVN	https://jvn.jp/en/vu/JVNVU91051826/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-56129
	Exposed IOCTL with Insufficient Access Control(CWE-782)	https://cwe.mitre.org/data/definitions/782.html

Impacted products

Vendor

Product

TOSHIBA

Generic IO & Memory Access driver

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-020742.html",
  "dc:date": "2026-06-26T09:52+09:00",
  "dcterms:issued": "2026-06-26T09:52+09:00",
  "dcterms:modified": "2026-06-26T09:52+09:00",
  "description": "Generic IO \u0026 Memory Access driver is part of a utility to configure BIOS/Supervisor passwords from within Windows. This driver is installed on PCs provided by TOSHIBA CORPORATION and Dynabook Inc. between 2009 and 2016.\r\nThe driver contains the following vulnerability.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/782.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eExposed IOCTL with Insufficient Access Control (CWE-782) - CVE-2026-56129\u003c/li\u003e\u003cul\u003e\u003cli\u003eThe CVSS assessment above assumes that a user with no administrative privilege accesses physical memory.\u003c/li\u003e\u003c/ul\u003e\u003c/ul\u003eAkshit Yadav (valium) reported this vulnerability to the developer. The developer reported the case to JPCERT/CC to notify users of the solution through JVN.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-020742.html",
  "sec:cpe": {
    "#text": "cpe:/a:toshiba:generic_io_and_memory_access_driver",
    "@product": "Generic IO \u0026 Memory Access driver",
    "@vendor": "TOSHIBA",
    "@version": "2.2"
  },
  "sec:cvss": {
    "@score": "5.5",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-020742",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/vu/JVNVU91051826/index.html",
      "@id": "JVNVU#91051826",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-56129",
      "@id": "CVE-2026-56129",
      "@source": "CVE"
    },
    {
      "#text": "https://cwe.mitre.org/data/definitions/782.html",
      "@id": "CWE-782",
      "@title": "Exposed IOCTL with Insufficient Access Control(CWE-782)"
    }
  ],
  "title": "Generic IO \u0026 Memory Access driver for TOSHIBA and Dynabook PCs exposes its IOCTL with insufficient access control"
}

CVE-2026-56129 (GCVE-0-2026-56129)

Vulnerability from cvelistv5 – Published: 2026-06-25 07:03 – Updated: 2026-06-25 12:32

Summary

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.

Severity

5.5 (Medium)


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

6.8 (Medium)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-25 12:31 UTC

CWE

CWE-782 - Exposed IOCTL with insufficient access control

Assigner

jpcert jpcert root

References

3 references

URL	Tags
https://global.sharp/corporate/info/product-secur…
https://corporate.jp.sharp/info/product-security/…
https://jvn.jp/en/vu/JVNVU91051826/

Impacted products

2 products

Vendor	Product	Version
Dynabook Inc.	Generic IO & Memory Access driver	Affected: all versions
TOSHIBA CORPORATION	Generic IO & Memory Access driver	Affected: all versions

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-56129",
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-25T12:31:18.344196Z",
                "version": "2.0.3"
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            "baseSeverity": "MEDIUM",
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          "url": "https://global.sharp/corporate/info/product-security/advisory-list/2026-003/"
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  "cveMetadata": {
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  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.