Publication Date: June 19, 2026
Last Updated: June 24, 2026
Security Vulnerability in Generic IO & Memory Access Driver
on TOSHIBA / Dynabook Drivers
Thank you for using Dynabook products.
Dynabook has identified security vulnerability in the Generic IO & Memory Access driver installed on certain TOSHIBA / Dynabook PCs provided from 2009 until around 2016.
As customers are using the affected PCs, we kindly request removing the relevant drivers by following the instructions provided below. However, this issue is not remotely exploitable over the network, and the overall exploitation risk is considered low under normal conditions.
| Affected Generic IO & Memory Access driver installed on the products |
Affected Generic IO & Memory Access driver installed on the products
Please see the "List of Affected Models" below.
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| Vulnerability Description |
The Generic IO & Memory Access drivers included in the affected products contain a vulnerability that allows a non-privileged user to access physical memory. 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 Base Score 6.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Base Score 5.5 CVE-ID: CVE-2026-56129 CWE-ID: Exposed IOCTL with Insufficient Access Control Weakness (CWE-782) |
| Possible impacts |
By accessing the driver with a malicious program on the affected product, a non-privileged user can gain arbitrary access to physical memory. |
| Countermeasure |
Customers using the affected product are requested to uninstall (remove) the driver if it is installed. Please note that, after uninstalling the driver, it will no longer be possible to configure the password using the Password Utility. If you need to set a password, please configure the BIOS password from “Security” in the BIOS Setup Utility. For instructions on how to start the BIOS Setup Utility, please refer to the following information: |
| References |
For detailed update procedures and region-specific information, please refer to the corresponding local product support pages listed below. Japan: United States: Europe: China: Taiwan: The CVE ID is provided in the "Vulnerability Description" section above. |
| Acknowledgment |
This vulnerability was discovered through a report from Akshit Yadav (valium). |
| Revision History |
June 19, 2026: Initial release of this vulnerability information. June 22, 2026: URLs for each region have been added. June 24, 2026: The Vulnerability Description and References have been updated. |
| List of Affected Models (Part numbers starting with 5 digits as below) |
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| PDW04 / PDW0F / PQG60 / PQG61 / PQG62 / PQG63 / PQG64 / PQG65 / PQG66 / PQG67 / PQX33 / PQX34 / PSC62 / PSC63 / PSC64 / PSC65 / PSC66 / PSC67 / PSC68 / PSC69 / PSC6A / PSC6B / PSC6C / PSC6D / PSC6E / PSC6F / PSC6G / PSC6H / PSC6J / PSC6K / PSC6L / PSC6M / PSC6N / PSC6P / PSC6Q / PSC6R / PSC92 / PSC93 / PSC94 / PSC95 / PSC96 / PSC97 / PSC98 / PSC99 / PSC9A / PSC9B / PSC9C / PSC9D / PSC9E / PSC9F / PSC9G / PSC9H / PSCB2 / PSCB3 / PSCB4 / PSCB5 / PSCB6 / PSCB7 / PSCB8 / PSCB9 / PSCD2 / PSCD3 / PSCD4 / PSCD5 / PSCD6 / PSCD7 / PSCD8 / PSCD9 / PSCDA / PSCDB / PSCDC / PSCDD / PSCDE / PSCDF / PSCDG / PSCDH / PSCDJ / PSCDK / PSCDL / PSCDM / PSCDS / PSCDT / PSCDU / PSCDV / PSCJ6 / PSCJ7 / PSCJ8 / PSCJ9 / PSCP2 / PSCP3 / PSCP4 / PSCP5 / PSCP6 / PSCP7 / PSCP8 / PSCP9 / PSCPA / PSCPB / PSCPC / PSCPD / PSCPE / PSCPF / PSCPG / PSCPH / PSCPJ / PSCPK / PSCPL / PSCPM / PSCPN / PSCPP / PSCPQ / PSCPR / PSCPS / PSCPT / PSCPU / PSCPV / PSCPW / PSCPX / PSCPY / PSCPZ / PSCQA / PSCQE / PSCQF / PSCQG / PSCQH / PSCQJ / PSCQK / PSCQL / PSCQM / PSD22 / PSD23 / PSD24 / PSD25 / PSDP2 / PSDP3 / PSE30 / PSE36 / PSE3B / PSE3H / PSK0G / PSK0H / PSK0J / PSK0K / PSK0L / PSK0M / PSK0N / PSK0P / PSK0Q / PSK0R / PSK0S / PSK0T / PSK0U / PSK0V / PSK0W / PSK0X / PSK0Y / PSK0Z / PSK10 / PSK11 / PSK12 / PSK13 / PSK14 / PSK15 / PSK16 / PSK17 / PSK18 / PSK19 / PSK1A / PSK1B / PSK1C / PSK1D / PSK1W / PSK1X / PSK1Y / PSK1Z / PSK2C / PSK2D / PSK2E / PSK2F / PSK2G / PSK2H / PSK2J / PSK2K / PSK2L / PSK2M / PSK2N / PSK2P / PSK2Q / PSK2R / PSK2S / PSK2T / PSK2U / PSK2V / PSK2Y / PSK2Z / PSK30 / PSK31 / PSK32 / PSK33 / PSK34 / PSK35 / PSK36 / PSK37 / PSK38 / PSK39 / PSK48 / PSK49 / PSK4A / PSK4B / PSK4C / PSK4D / PSK4E / PSK4F / PSK4G / PSK4H / PSK4J / PSK4K / PSK4L / PSK4M / PSK4N / PSK4P / PSK4Q / PSK4R / PSK4S / PSK4T / PSK4U / PSK4V / PSK4W / PSK4X / PSK4Y / PSK4Z / PSK50 / PSK51 / PSK52 / PSK53 / PSK54 / PSK55 / PSK56 / PSK57 / PSK58 / PSK59 / PSK5A / PSK5B / PSK5C / PSK5D / PSK5E / PSK5F / PSK5N / PSK5P / PSK5Q / PSK5R / PSK5S / PSK6M / PSK6N / PSK6P / PSK6Q / PSK6R / PSK6S / PSK6T / PSK6U / PSK6V / PSK6W / PSK6X / PSK6Y / PSK6Z / PSK70 / PSK71 / PSK72 / PSK7B / PSK7G / PSK7H / PSK7J / PSK7K / PSK7L / PSK7M / PSK7N / PSK7P / PSK7Q / PSK7R / PSK7S / PSK7T / PSK7U / PSK7V / PSK7W / PSK7X / PSK7Y / PSK7Z / PSK82 / PSK83 / PSK84 / PSK85 / PSK86 / PSK87 / PSK88 / PSK89 / PSK8A / PSK8B / PSK8C / PSK8D / PSK8E / PSK8F / PSK8G / PSK8H / PSK8J / PSK8K / PSK8L / PSK8M / PSK8N / PSK8P / PSK8Q / PSK8R / PSK8S / PSK8T / PSK8U / PSK8V / PSK8W / PSK8X / PSK8Y / PSK8Z / PSK92 / PSK93 / PSK94 / PSK95 / PSK96 / PSK97 / PSK98 / PSK99 / PSK9A / PSK9B / PSK9C / PSK9D / PSK9E / PSK9F / PSK9G / PSK9H / PSK9J / PSK9K / PSK9L / PSK9M / PSK9N / PSK9P / PSK9Q / PSK9R / PSK9S / PSK9T / PSK9U / PSK9V / PSK9W / PSK9X / PSKEG / PSKEH / PSKEJ / PSKEK / PSKF2 / PSKF3 / PSKF4 / PSKF5 / PSKF6 / PSKF7 / PSKF8 / PSKF9 / PSKFA / PSKFB / PSKFC / PSKFD / PSKFE / PSKFF / PSKFG / PSKFJ / PSKSQ / PSKSR / PSKSS / PSKST / PSKSU / PSKSV / PSKT4 / PSKT5 / PSKT6 / PSKT7 / PSKT8 / PSKT9 / PSKTA / PSKTB / PSKTC / PSKTD / PSKTE / PSKTF / PSKTG / PSKTH / PSKTJ / PSKTK / PSKTL / PSKTM / PSKTN / PSKTP / PSKTQ / PSKTR / PSKTS / PSKTT / PSKTU / PSKTV / PSKTW / PSKTX / PSKTY / PSKTZ / PSKU2 / PSKU3 / PSKU4 / PSKU5 / PSKU6 / PSKU7 / PSKU8 / PSKU9 / PSKUA / PSKUB / PSKUC / PSKUD / PSKUE / PSKUF / PSKUL / PSKUM / PSKUN / PSKUP / PSKUQ / PSKUR / PSKUS / PSKUT / PSKVC / PSKVD / PSKW2 / PSKW3 / PSKW4 / PSKW5 / PSKW6 / PSKW7 / PSKW8 / PSKW9 / PSKWA / PSKWB / PSKWC / PSKWD / PSKWE / PSKWF / PSKWG / PSKWH / PSKWJ / PSKWK / PSKWL / PSKWM / PSKWN / PSKWP / PSKWQ / PSKWR / PSKWS / PSKWT / PSKWU / PSKWV / PSKWW / PSKWX / PSKWY / PSKWZ / PSKXA / PSKXB / PSKXC / PSKXD / PSKXE / PSKXF / PSKXG / PSKXH / PSKXJ / PSKXK / PSKXL / PSKXM / PSKXN / PSKXP / PSKXQ / PSKXR / PSKXS / PSKXT / PSKXU / PSKXV / PSKXW / PSPE0 / PSPE4 / PSPE8 / PSPEE / PSPEJ / PSPEN / PSPES / PSPEW / PSPF0 / PSPF4 / PSPF8 / PSPFE / PSPFJ / PSPFN / PSPFS / PSPFW / PSPG0 / PSPG4 / PSPG8 / PSPGE / PSPGJ / PSPGN / PSPGS / PSPGW / PSPH0 / PSPH4 / PSPHJ / PSPHN / PSPLJ / PSPLK / PSPLN / PSPLP / PSPLQ / PSPLR / PSPLS / PSPLT / PSPQ2 / PSPQ3 / PSPQ4 / PSPQ5 / PSPQ6 / PSPQ7 / PSPQ8 / PSPQ9 / PSPQA / PSPQB / PSPQC / PSPQD / PSPQE / PSPQF / PSPQG / PSPQH / PSPQJ / PSPQK / PSPQL / PSPQM / PSPRB / PSPRC / PSPRD / PSPRE / PSPRF / PSPRG / PSPRH / PSPRJ / PSPT2 / PSPT3 / PSPT4 / PSPT5 / PSPT6 / PSPT7 / PSPT8 / PSPT9 / PSPTJ / PSPTK / PSPTL / PSPTM / PSPTN / PSPTP / PSPTQ / PSPTR / PSPTS / PSPTT / PSPTU / PSPTV / PSPTW / PSPTX / PSPTY / PSPTZ / PSPUA / PSPUB / PSPUC / PSPUD / PSPUE / PSPUF / PSPUG / PSPUH / PSU4R / PSU4S / PSU4T / PSU4V / PSU4W / PSU4X / PSU5R / PSU5V / PSU5X / PSVP2 / PSVP3 |
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