ELAN Microelectronics Corp. ELAN Smart-Pad up to ETD24.21.52.3 ETD.sys stack-based overflow

Summaryinfo

A vulnerability identified as problematic has been detected in ELAN Microelectronics Corp. ELAN Smart-Pad up to ETD24.21.52.3. Affected is an unknown function of the file ETD.sys. Performing a manipulation results in stack-based overflow. This vulnerability is identified as CVE-2026-18909. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in ELAN Microelectronics Corp. ELAN Smart-Pad up to ETD24.21.52.3. This affects some unknown functionality of the file ETD.sys. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at emc.com.tw. This vulnerability is uniquely identified as CVE-2026-18909 since 08/05/2026. The exploitability is told to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-53707). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• ELAN Microelectronics Corp.

Name

• ELAN Smart-Pad

Version

• ETD24.21.52.0
• ETD24.21.52.1
• ETD24.21.52.2
• ETD24.21.52.3

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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