CVE-2026-94142: BioStar Temperature Monitor Utility IOCTL BS_HWMIO64_W10.sys sub_1105C write-what-where
A security vulnerability has been detected in BioStar Temperature Monitor Utility 1.2.1806.2200. Affected by this vulnerability is the function sub1105C of the file BSHWMIO64W10.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.
Affected Software
Event History
Frequently Asked Questions
Who is realistically exposed to this issue?
Systems running BioStar Temperature Monitor Utility version 1.2.1806.2200 with the BS_HWMIO64_W10.sys driver present are exposed. Exploitation is local, so remote-only attackers cannot directly trigger it without first obtaining local access.
What level of access does an attacker need?
An attacker needs local access and low privileges. No user interaction is required.
Is public exploit information available?
Yes. The exploit has been publicly disclosed and may be used.
Is a vendor fix available?
The provided information does not identify a fix. It states that the vendor was contacted early about the disclosure but did not respond.