Vulnerability · Published Jun 25, 2026 · Assigned by jpcert
CVE-2026-56129
Medium 5.5
In plain English
A medium-severity security flaw in Generic IO & Memory Access driver from Dynabook Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 94.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Dynabook Inc. | Generic IO & Memory Access driver | all versions |
| TOSHIBA CORPORATION | Generic IO & Memory Access driver | all versions |
Weakness: CWE-782 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N