23 Oct 2026 15:48:27 UTC
MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers
cve-program · CVE-2026-57851 · Published
CVE-2026-57851
MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers
CVSS 4.0 8.5 HIGHCVSS 3.1 7.8 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-57851
PublishedMSI 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.
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