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CVE-2026-57851: Exposed IOCTL with Insufficient Access Control in Micro-Star International (MSI) KernCoreLib64.sys

0
High
VulnerabilityCVE-2026-57851cvecve-2026-57851
Published: 07/07/2026 (07/07/2026, 16:02:05 UTC)
Source: CVE Database V5
Vendor/Project: Micro-Star International (MSI)
Product: KernCoreLib64.sys

Description

MSI Feature Manager contains a local privilege escalation vulnerability in the KernCoreLib64.sys kernel driver that allows any locally logged-on user to perform arbitrary physical memory read/write and unrestricted I/O port operations by accessing exposed IOCTL handlers without administrator privileges. Attackers can exploit the accessible device object through IOCTL handlers to manipulate kernel objects, tamper with kernel-mode callbacks, bypass Protected Process Light protections, and disable security software.

CVSS v4.0

Score 8.5high

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Technical Details

Data Version
5.2
Assigner Short Name
VulnCheck
Date Reserved
2026-06-25T18:48:00.282Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a4d2cd5c9d9e3dbe3825433

Added to database: 07/07/2026, 16:44:05 UTC

Last updated: 07/07/2026, 16:44:05 UTC

Views: 1

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