CVE-2026-57851

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 v4.0

8.5 HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.17% chance of exploitation in the next 30 days, 6th percentile

Published

2026-07-07

Updated

2026-07-28

Proof-of-concept exploits (1)

• readmsr/MSI_FeatureManager_CVE8★ · 2026-06-25

References

• CVE Record
• NVD entry

Related

• CVE-2026-57850
• CVE-2026-57858
• CVE-2026-57830
• CVE-2026-57863
• CVE-2026-57829
• CVE-2026-57886