CVE-2026-57851Disclosure

LOWCVSS 8.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-782

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Full discourse1 post

DFIR Lab@DFIR_Lab91d
Disclosure
🚨 HIGH: CVE-2026-57851 (CVSS 7.8) - MSI Feature Manager KernCoreLib64.sys driver allows local privilege escalation via exposed IOCTL handlers. Attackers can read/write physical memory, bypass security protections. #CVE #PatchNow #ThreatIntel https://t.co/2PT0ztugoR
Post summary
A local privilege escalation vulnerability (CVE‑2026‑57851) in MSI Feature Manager's KernCoreLib64.sys driver has been disclosed with a CVSS score of 7.8, detailing exposed IOCTL handlers that allow attackers to read/write physical memory and bypass security protections.
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