CVE-2026-94146

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.

  • Published Sep 21, 2026
  • CVSS 8.5 high
  • 0.2% chance of exploitation in the next 30 days (EPSS)
  • No fix is known yet

Affected software

CVE-2026-94146 at the National Vulnerability Database