CVE-2026-94146

HIGH 8.8

BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-123 CWE-119
Vendor	biostar
Product	bios update utility
Published	Sep 21, 2026

Stay Ahead of the Next One

Get instant alerts for biostar bios update utility

Be the first to know when new high vulnerabilities affecting biostar bios update utility are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

BioStar / BIOS Update Utility

1.9.7.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/408061 vuldb.com: https://vuldb.com/vuln/408061/cti vuldb.com: https://vuldb.com/cve/CVE-2026-94146 vuldb.com: https://vuldb.com/submit/894066

Credits

🔍 Bigcat (VulDB User) VulDB CNA Team