CVE-2026-94142— BioStar Temperature Monitor Utility IOCTL BS_HWMIO64_W10.sys sub_1105C write-what-where

Quick assessment

Affected

BioStar Temperature Monitor Utility

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 BioStar Temperature Monitor Utility 1.2.1806.2200 中检测到一个安全漏洞。该漏洞影响了文件 BS_HWMIO64_W10.sys 中 IOCTL Handler 组件的函数 sub_1105C。通过操纵参数 PhysicalAddress，可触发“任意地址写入”（write-what-where）条件。该攻击需要以本地方式执行。漏洞利用技术已公开披露，并可能被利用。供应商已提前收到该漏洞披露通知，但未以任何方式作出回应。

CVSS 8.8 · High EPSS 0.18% · P8 Updated Sep 23, 2026

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 1

Vendor	Product	Version Range	Status
BioStar	Temperature Monitor Utility	`1.2.1806.2200`	affected

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Vulnerability Information

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Vulnerability Title

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

Source: CVE Program / CVE List V5

Vulnerability Description

A security vulnerability has been detected in BioStar Temperature Monitor Utility 1.2.1806.2200. Affected by this vulnerability is the function sub_1105C of the file BS_HWMIO64_W10.sys of the component IOCTL Handler. Such manipulation of the argument PhysicalAddress leads to write-what-where condition. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

任意地址可写任意内容条件

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
BioStar	Temperature Monitor Utility	1.2.1806.2200	`cpe:2.3:a:biostar:temperature_monitor_utility::::::::`

II. Public POCs for CVE-2026-94142

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III. Intelligence Information for CVE-2026-94142

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https://www.cve.org/CVERecord?id=CVE-2026-94142

Same Patch Batch · BioStar · 2026-09-21 · 4 CVEs total

CVE-2026-94128	8.8 HIGH	BioStar VIVID LED DJ IOCTL BS_LED64.sys sub_1105C write-what-where
CVE-2026-94129	8.8 HIGH	BioStar VALKYRIE AURORA IOCTL BS_RVSIO64.sys sub_1105C write-what-where
CVE-2026-94146	8.8 HIGH	BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where

IV. Related Vulnerabilities

Same vendor: BioStar

Same weakness: CWE-123