CVE-2026-57851

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-07. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.8
EG Score
7.8(high)
EPSS
6.6%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 10, 2026

Advisory Details (2)

Auto-updated Jul 7, 2026
No patch confirmed yet.
generic

MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers | Advisories | VulnCheck

https://www.vulncheck.com/advisories/msi-gamegaraj-kerncorelib64-sys-privilege-escalation-via-ioctl-handlers
generic

GitHub - readmsr/MSI_FeatureManager_CVE: CVE-2026-57851 · GitHub

https://github.com/readmsr/MSI_FeatureManager_CVE

Vendor Advisories for CVE-2026-57851(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 12:34 UTCEG score recompute
  2. 2026-07-11 12:34 UTCGHSA enrichment
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-10 23:28 UTCEG score recompute
  6. 2026-07-10 23:28 UTCGHSA enrichment
  7. 2026-07-10 10:21 UTCEG score recompute
  8. 2026-07-10 10:21 UTCGHSA enrichment
  9. 2026-07-09 21:13 UTCEG score recompute
  10. 2026-07-09 21:13 UTCGHSA enrichment
  11. 2026-07-09 19:10 UTCEPSS rescore
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-09 08:07 UTCEG score recompute
  14. 2026-07-09 08:07 UTCGHSA enrichment
  15. 2026-07-08 19:01 UTCEG score recompute
  16. 2026-07-08 19:01 UTCGHSA enrichment
  17. 2026-07-08 15:16 UTCEPSS rescore
  18. 2026-07-08 15:16 UTCEPSS rescore
  19. 2026-07-08 05:55 UTCEG score recompute
  20. 2026-07-08 05:54 UTCGHSA enrichment
  21. 2026-07-07 16:48 UTCEG score recompute
  22. 2026-07-07 16:46 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCreadmsr/MSI_FeatureManager_CVE
    First seen Jun 24, 2026

    CVE-2026-57851

    Open source ↗

Frequently asked(5)

What is CVE-2026-57851?
CVE-2026-57851 is a high vulnerability published on July 7, 2026. 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…
When was CVE-2026-57851 disclosed?
CVE-2026-57851 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57851 actively exploited?
CVE-2026-57851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-57851?
CVE-2026-57851 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-57851?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57851, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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