CVE-2026-18909
- State
- Published
- Severity
- 5.6 Medium
- Published
- Aug 6, 2026
- Updated
- Aug 6, 2026
- Reserved
- Aug 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.6 Medium | CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/AU:N/R:U | ELAN |
| 3.1 | 4.7 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | ELAN |
Weaknesses
- CWE-121 Stack-based buffer overflow
Affected Products
| Product | Versions |
|---|---|
ELAN Smart-PadELAN Microelectronics Corp. |
|
References
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