Stack-based buffer overflow in Bluetooth ACPI driver TOSRFEC.SYS and Bluetooth ACPI driver DRFEC.SYS - CVE-2026-35553

Vulnerability details

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A local administrator can modify certain registry values, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

How to mitigate CVE-2026-35553

External References

• https://jvn.jp/en/vu/JVNVU96334293/index.html
• https://global.sharp/corporate/info/product-security/advisory-list/2026-001/

Related Security Bulletins

• Stack-based buffer overflow in Dynabook Bluetooth ACPI Drivers