CVE Catalog

CVE-2026-94146

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.12%

2th percentile - higher than 2% of all known CVEs

Summary

A vulnerability in BioStar BIOS Update Utility 1.9.7.3 affects the function sub_110BC in BSMEM64_W10.sys (IOCTL Handler component). Manipulation of the PhysicalAddress/Size arguments results in a write-what-where condition. Local access is required, and the exploit has been made public.

Risk Assessment

A local attacker can write arbitrary data to arbitrary kernel memory, enabling privilege escalation or system destabilization. Since the exploit is public, the risk is high.

Recommendation

Update BioStar BIOS Update Utility to the latest version once the vendor releases a fix. Until then, restrict local access to trusted users and consider removing the tool if not needed.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS