CVE-2026-18909
ELAN Microelectronics Smart-Pad Stack-Based Buffer Overflow
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.
INFO
Published Date :
Aug. 6, 2026, 5:16 a.m.
Last Modified :
Aug. 6, 2026, 5:16 a.m.
Remotely Exploit :
No
Source :
36106deb-8e95-420b-a0a0-e70af5d245df
Affected Products
The following products are affected by CVE-2026-18909
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 36106deb-8e95-420b-a0a0-e70af5d245df | ||||
| CVSS 4.0 | MEDIUM | 36106deb-8e95-420b-a0a0-e70af5d245df | ||||
| CVSS 4.0 | MEDIUM | 36106deb-8e95-420b-a0a0-e70af5d245df |
Solution
- Update ELAN Smart-Pad drivers.
- Apply vendor-provided patches.
- Reboot the system after updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18909.
| URL | Resource |
|---|---|
| https://www.emc.com.tw/emc/tw/vulnerability-disclosure-policy |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18909 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18909
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18909 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18909 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 36106deb-8e95-420b-a0a0-e70af5d245df
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'ELAN Microelectronics Corp.', 'modules': ['ETD.sys', 'ETDSMBus.sys'], 'product': 'ELAN Smart-Pad', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': 'ETD24.21.52.3'}], 'platforms': ['Windows'], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-121 Added Reference https://www.emc.com.tw/emc/tw/vulnerability-disclosure-policy