Vulnerability · Published Aug 6, 2026 · Assigned by ELAN
CVE-2026-18909
Medium 4.7
In plain English
A medium-severity stack buffer overflow in ELAN Smart-Pad from ELAN Microelectronics Corp.. 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 1% of all known vulnerabilities).
Official description
A stack-based buffer overflow vulnerability exists in ELAN Microelectronics Corp. ELAN Smart-Pad on Windows (ETD.sys and ETDSMBus.sys). During Intel SMBus recovery, ETDSMBus.sys does not enforce an upper-bound check on the hardware-derived report count, allowing an out-of-range value to be forwarded to ETD.sys where it is used as a loop counter for a stack buffer copy without destination size validation. A local attacker with standard user privileges can trigger a kernel bugcheck (BSOD 0xF7 DRIVER_OVERRAN_STACK_BUFFER), resulting in denial of service. This issue affects ELAN Smart-Pad through ETD24.21.52.3.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ELAN Microelectronics Corp. | ELAN Smart-Pad | 0 – through ETD24.21.52.3 |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H