CVE-2026-94146 PUBLISHED

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.

• Bigcat (VulDB User) reporter
• VulDB CNA Team coordinator

• VDB-408061 | BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where
• VDB-408061 | CTI Indicators (IOB, IOC, IOA)
• CVE-2026-94146 | CVE Analysis and Report
• Submit #894066 | BIOSTAR Group BIOS Update Utility 1.9.7.3 Arbitrary Kernel Memory Read/Write

• Write-what-where Condition CWE
• Memory Corruption CWE