TI-2026-27661 Aliases CVE-2026-35553 GHSA-gp9q-xqfw-39jw

Stack-based buffer overflow in Dynabook Inc. TOSRFEC.SYS

LOW 37CWE-121Published 2026-04-13 · Updated 2026-04-13

Key facts

Attack vector: Local
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Bluetooth ACPI Drivers provided by Dynabook Inc. contain a stack-based buffer overflow vulnerability. An attacker may execute arbitrary code by modifying certain registry values.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00147 3rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Dynabook Inc.	TOSRFEC.SYS	all versions	—	No fix listed	CNA
Dynabook Inc.	DRFEC.SYS	up to v11.0.0.0	—	No fix listed	CNA

TOSRFEC.SYS VendorDynabook Inc. Affected all versions Fixed in — No fix listed CNA
DRFEC.SYS VendorDynabook Inc. Affected up to v11.0.0.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-35553
2026-10-03 Alias added: GHSA-gp9q-xqfw-39jw

References

Other 3

TI-2026-40507 Generic IO & Memory Access driver for PCs provided by TOSHIBA CORPORATION and Dynabook… CVSS 4.0MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences