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CVE-2026-57851

HIGH Exploitation: PoC
7.8
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-57851
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-06-25 18:48 UTC
Published
2026-07-07 16:02 UTC
Last updated
2026-07-07 17:00 UTC
Primary CWE
CWE-782
Exposed IOCTL with Insufficient Access Control
Vendor / Product
Micro-Star International (MSI) / KernCoreLib64.sys
Sources
cve.org  ·  NVD

Severity & Metrics

7.8 HIGH CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Micro-Star International (MSI) KernCoreLib64.sys — physical memory, I/O ports
Weakness (CWE)
CWESourceDescription
CWE-782 cna Exposed IOCTL with Insufficient Access Control
CVSS scores (2)
ScoreSeverityVersionSourceVector
8.5 HIGH 4.0 cna 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
7.8 HIGH 3.1 cna CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References (2)
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