BioStar Temperature Monitor Utility 1.2.1806.2200 IOCTL BS_HWMIO64_W10.sys sub_1105C PhysicalAddress write-what-where

Summaryinfo

A vulnerability classified as critical has been found in BioStar Temperature Monitor Utility 1.2.1806.2200. Affected by this issue is the function sub_1105C of the file BS_HWMIO64_W10.sys of the component IOCTL Handler. Performing a manipulation of the argument PhysicalAddress results in write-what-where. This vulnerability is reported as CVE-2026-94142. The attack requires a local approach. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in BioStar Temperature Monitor Utility 1.2.1806.2200. It has been classified as critical. This affects the function sub_1105C of the file BS_HWMIO64_W10.sys of the component IOCTL Handler. The manipulation of the argument PhysicalAddress with an unknown input leads to a write-what-where vulnerability. CWE is classifying the issue as CWE-123. Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability.

This vulnerability is uniquely identified as CVE-2026-94142. The exploitability is told to be easy. An attack has to be approached locally. Technical details and a public exploit are known.

It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• BioStar

Name

• Temperature Monitor Utility

Version

• 1.2.1806.2200

CPE 2.3info

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CPE 2.2info

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CVSSv3info

CVSSv2info

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Accepted

• Submit #893919: BioStar Temperature Monitor Utility 1.2.1806.2200 Arbitrary Kernel Memory Read/Write (by Bigcat)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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