---
title: "CVE-2026-94146: BioStar BIOS Update Utility - Write-What-Where Condition"
description: "BioStar BIOS Update Utility 1.9.7.3 contains a write-what-where condition caused by manipulation of PhysicalAddress/Size argument in IOCTL Handler sub_110BC, letting local attackers write arbitrary memory, exploit requires local access."
url: https://panop.io/threat-heartbeat/CVE-2026-94146/
---

# CVE-2026-94146 BioStar BIOS Update Utility - Write-What-Where Condition

BioStar BIOS Update Utility 1.9.7.3 contains a write-what-where condition caused by manipulation of PhysicalAddress/Size argument in IOCTL Handler sub\_110BC, letting local attackers write arbitrary memory, exploit requires local access.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.18% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-94146)

## Details

Type

Write-What-Where Condition

Impact

Privilege Escalation

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Published

21 September 2026

Updated

15 October 2026

Weakness

[CWE-119](https://cwe.mitre.org/data/definitions/119.html)

## Vendor fix

Update to the latest version or apply vendor patches if available.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-94146](https://nvd.nist.gov/vuln/detail/CVE-2026-94146)
- [https://vuldb.com/vuln/408061/cti](https://vuldb.com/vuln/408061/cti)
- [https://vuldb.com/cve/CVE-2026-94146](https://vuldb.com/cve/CVE-2026-94146)
- [https://vuldb.com/submit/894066](https://vuldb.com/submit/894066)
- [https://vuldb.com/vuln/408061](https://vuldb.com/vuln/408061)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)