Vulnerability · Published Apr 13, 2026 · Assigned by jpcert
CVE-2026-35553
Medium 6.7
In plain English
A medium-severity stack buffer overflow in DRFEC.SYS 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 0.1% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)6.7Medium
Exploit odds (30 days)0.1%top 96.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Dynabook Inc. | TOSRFEC.SYS | all versions |
| Dynabook Inc. | DRFEC.SYS | v11.0.0.0 and earlier |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H