PT-2026-56209 · Micro Star International · Kerncorelib64.Sys

Published 2026-07-07 · Updated 2026-07-07 · CVE-2026-57851

NVD

CVSS v3.1

7.8

High

Base vector

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

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.

Exploit

Fix

Weakness Enumeration

CWE-782

Related Identifiers

CVE-2026-57851

Affected Products

Kerncorelib64.Sys

References · 3

• 🔥 https://github.com/readmsr/MSI_FeatureManager_CVE · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-57851 · Security Note
• https://vulncheck.com/advisories/msi-gamegaraj-kerncorelib64-sys-privilege-escalation-via-ioctl-handlers · Note