CVE-2026-57851
MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers
CVSS Score
7.8
EPSS Score
0.2%
EPSS Percentile
7th
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.
| CWE | CWE-782 |
| Vendor | micro-star international (msi) |
| Product | kerncorelib64.sys |
| Published | Jul 7, 2026 |
| Last Updated | Jul 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Micro-Star International (MSI) / KernCoreLib64.sys
0 ≤ 1.0.2605.1301
References
Credits
🔍 Turan Doruk Cerit