CVE-2026-56129: Exposed IOCTL with insufficient access control in Dynabook Inc. Generic IO & Memory Access driver
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.
AI Analysis
Technical Summary
CVE-2026-56129 describes a vulnerability in the Generic IO & Memory Access driver for PCs by Dynabook Inc. and TOSHIBA CORPORATION. The driver exposes an IOCTL interface that lacks proper access control, enabling non-administrative logged-in users to access physical memory. This could potentially lead to unauthorized memory manipulation or information disclosure. The vulnerability has been assigned a CVSS 3.1 base score of 5.5, indicating medium severity. There is no vendor advisory or patch information available at this time, and no known exploits have been reported in the wild.
Potential Impact
A logged-in user without administrative privileges can access physical memory via the exposed IOCTL interface. This could lead to unauthorized information disclosure or integrity violations of memory contents. There is no indication of availability impact. The vulnerability does not require user interaction and has low attack complexity but requires local access.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local user access where possible and monitor for updates from Dynabook Inc. or TOSHIBA CORPORATION regarding patches or mitigations.
CVE-2026-56129: Exposed IOCTL with insufficient access control in Dynabook Inc. Generic IO & Memory Access driver
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.
CVSS v3.1
Score 5.5medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-56129 describes a vulnerability in the Generic IO & Memory Access driver for PCs by Dynabook Inc. and TOSHIBA CORPORATION. The driver exposes an IOCTL interface that lacks proper access control, enabling non-administrative logged-in users to access physical memory. This could potentially lead to unauthorized memory manipulation or information disclosure. The vulnerability has been assigned a CVSS 3.1 base score of 5.5, indicating medium severity. There is no vendor advisory or patch information available at this time, and no known exploits have been reported in the wild.
Potential Impact
A logged-in user without administrative privileges can access physical memory via the exposed IOCTL interface. This could lead to unauthorized information disclosure or integrity violations of memory contents. There is no indication of availability impact. The vulnerability does not require user interaction and has low attack complexity but requires local access.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local user access where possible and monitor for updates from Dynabook Inc. or TOSHIBA CORPORATION regarding patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- jpcert
- Date Reserved
- 2026-06-19T02:06:36.536Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3ce3cc4853345fc19c2712
Added to database: 06/25/2026, 08:16:12 UTC
Last enriched: 06/25/2026, 08:31:00 UTC
Last updated: 08/08/2026, 12:41:11 UTC
Views: 80
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.