CVE-2026-57851 — MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers
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 physic…
Published: 2026-07-07 · CVSS: 8.5 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7