CVE WatchSep 3, 2026

CVE-2026-18909

A stack-based buffer overflow vulnerability exists in ELAN Microelectronics Corp. ELAN Smart-Pad on Windows (ETD.sys and ETDSMBus.sys). Duri

CVSS

4.7

Medium

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: Aug 6, 2026 · Last modified: Sep 3, 2026 · CWE-121

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-09-242026-10-22

Technical 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.

Official references

www.emc.com.twhttps://www.emc.com.tw/emc/tw/vulnerability-disclosure-policy

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