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Vulnerability record · CVE-2026-94146 · published 21 September 2026

CVE-2026-94146: Memory buffer overflow vulnerability

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.

8.5 CVSS 4.0 High EPSS 0.18% · top 93.0% CWE-119 · Memory buffer overflowCWE-123 · CWE-123 Deferred
8.5CVSS 4.0 base score, v2 6.8
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
22 Sep 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-94146), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.