CVE-2026-57851
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
The KernCoreLib64.sys kernel driver in MSI Feature Manager has a local privilege escalation vulnerability. Any locally logged-on user can perform arbitrary physical memory read/write and unrestricted I/O port operations via exposed IOCTL handlers.
Risk Assessment
Attackers can manipulate kernel objects, bypass Protected Process Light protections, and disable security software, leading to full system compromise.
Recommendation
Immediately update MSI Feature Manager to the latest patched version. Until then, restrict access to the driver by blocking unauthorized IOCTL operations.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

