VULNERABILITY INTELLIGENCE
CVE-2026-18909
CVSS score4.7 MEDIUM
EPSS probability0.11%
CISA KEVNot currently listed
Published2026-08-06
Last modified2026-10-23
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
Weakness classification
- 36106deb-8e95-420b-a0a0-e70af5d245df: CWE-121