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.
History

Tue, 28 Jul 2026 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Icu-project
Icu-project international Components For Unicode
CPEs cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:*
Vendors & Products Icu-project
Icu-project international Components For Unicode

Fri, 10 Jul 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Msi
Msi kerncorelib64.sys
Vendors & Products Msi
Msi kerncorelib64.sys

Tue, 07 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 07 Jul 2026 16:45:00 +0000

Type Values Removed Values Added
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.
Title MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers
Weaknesses CWE-782
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-07-28T01:49:47.441Z

Reserved: 2026-06-25T18:48:00.282Z

Link: CVE-2026-57851

cve-icon Vulnrichment

Updated: 2026-07-07T17:00:50.442Z

cve-icon NVD

Status : Deferred

Published: 2026-07-07T17:16:36.880

Modified: 2026-07-10T18:22:49.657

Link: CVE-2026-57851

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-01T17:30:07Z