Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-57851
Micro-Star International (MSI) KernCoreLib64.sys — MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
L L N L N H H H 8.5 .0017 5.3 —
AFFECTED
Product Versions Fixed
KernCoreLib64.sys unspecified —
TIMELINE
Jun 25 Reserved by VulnCheck
Jul 7 Published (CNA: VulnCheck)
Sep 24 EXPLOIT PUBLISHED — CVE-2026-57851 (Micro-Star International (MSI) KernCoreLib64.sys). Public exploit reference added.
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 25, 2026 | Reserved | Reserved by VulnCheck |
| July 7, 2026 | Published | Published (CNA: VulnCheck) |
| September 24, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-57851 (Micro-Star International (MSI) KernCoreLib64.sys). Public exploit reference added. |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-57851 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
