CVE-2026-94146: Biostar BIOS Update Utility

High severity, CVSS 8.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability was found in BioStar BIOS Update Utility 1.9.7.3. This issue affects the function sub_110BC of the file BSMEM64_W10.sys of the component IOCTL Handler. The manipulation of the argument PhysicalAddress/Size results in write-what-where condition. Attacking locally is a requirement. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Biostar BIOS Update Utility: version 1.9.7.3 only

Published 2026-09-21. Last modified 2026-09-22.