CVE-2026-57851: high-severity vulnerability in Micro-Star International (MSI) KernCoreLib64.sys
MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers
Published · Updated
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41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.5epss 0.2%
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.
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
Affected products
Micro-Star International (MSI) · KernCoreLib64.syspublic PoCs found — 1
cve_referencegithub.com/readmsr/MSI_FeatureManager_CVE★ 10⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.