CVE-2026-57851

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-07. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: Elevated riskExposed: 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(medium)
EG Risk
51(Track*)
EG Risk 51/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 28, 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 21× in last 7d / 106× 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.

Showing the most recent 100 of 157 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-25 13:41 UTCGHSA enrichment
  3. 2026-08-25 00:34 UTCEG score recompute
  4. 2026-08-25 00:34 UTCGHSA enrichment
  5. 2026-08-24 11:26 UTCEG score recompute
  6. 2026-08-24 11:26 UTCGHSA enrichment
  7. 2026-08-23 22:19 UTCGHSA enrichment
  8. 2026-08-23 09:12 UTCGHSA enrichment
  9. 2026-08-22 20:06 UTCGHSA enrichment
  10. 2026-08-22 06:59 UTCEG score recompute
  11. 2026-08-22 06:59 UTCGHSA enrichment
  12. 2026-08-21 23:49 UTCEPSS rescore
  13. 2026-08-21 17:52 UTCGHSA enrichment
  14. 2026-08-21 04:46 UTCEG score recompute
  15. 2026-08-21 04:46 UTCGHSA enrichment
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-20 15:40 UTCGHSA enrichment
  18. 2026-08-20 02:16 UTCEG score recompute
  19. 2026-08-20 02:16 UTCGHSA enrichment
  20. 2026-08-19 17:04 UTCEPSS rescore
  21. 2026-08-19 09:54 UTCGHSA enrichment
  22. 2026-08-18 20:47 UTCEG score recompute
  23. 2026-08-18 20:47 UTCGHSA enrichment
  24. 2026-08-18 13:48 UTCEPSS rescore
  25. 2026-08-18 03:03 UTCEG score recompute
Show 75 more
  1. 2026-08-18 03:03 UTCGHSA enrichment
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-17 12:15 UTCGHSA enrichment
  4. 2026-08-16 23:08 UTCEG score recompute
  5. 2026-08-16 23:08 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 10:02 UTCEG score recompute
  8. 2026-08-16 10:02 UTCGHSA enrichment
  9. 2026-08-16 02:14 UTCEPSS rescore
  10. 2026-08-15 20:56 UTCGHSA enrichment
  11. 2026-08-15 07:49 UTCEG score recompute
  12. 2026-08-15 07:49 UTCGHSA enrichment
  13. 2026-08-15 01:30 UTCEPSS rescore
  14. 2026-08-14 18:22 UTCGHSA enrichment
  15. 2026-08-14 05:16 UTCEG score recompute
  16. 2026-08-14 05:16 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 16:09 UTCGHSA enrichment
  19. 2026-08-13 03:02 UTCGHSA enrichment
  20. 2026-08-12 13:56 UTCEG score recompute
  21. 2026-08-12 13:56 UTCGHSA enrichment
  22. 2026-08-12 13:51 UTCEPSS rescore
  23. 2026-08-12 00:49 UTCEG score recompute
  24. 2026-08-12 00:49 UTCGHSA enrichment
  25. 2026-08-11 11:43 UTCEG score recompute
  26. 2026-08-11 11:43 UTCGHSA enrichment
  27. 2026-08-11 00:00 UTCEPSS rescore
  28. 2026-08-10 22:37 UTCGHSA enrichment
  29. 2026-08-10 09:30 UTCGHSA enrichment
  30. 2026-08-09 20:24 UTCEG score recompute
  31. 2026-08-09 20:24 UTCGHSA enrichment
  32. 2026-08-09 13:46 UTCEPSS rescore
  33. 2026-08-09 07:18 UTCGHSA enrichment
  34. 2026-08-08 18:12 UTCGHSA enrichment
  35. 2026-08-08 05:06 UTCEG score recompute
  36. 2026-08-08 05:06 UTCGHSA enrichment
  37. 2026-08-07 15:59 UTCGHSA enrichment
  38. 2026-08-07 02:53 UTCEG score recompute
  39. 2026-08-07 02:53 UTCGHSA enrichment
  40. 2026-08-06 13:47 UTCEPSS rescore
  41. 2026-08-06 13:46 UTCGHSA enrichment
  42. 2026-08-06 00:39 UTCEG score recompute
  43. 2026-08-06 00:39 UTCGHSA enrichment
  44. 2026-08-05 19:17 UTCEPSS rescore
  45. 2026-08-05 11:33 UTCGHSA enrichment
  46. 2026-08-04 21:55 UTCEG score recompute
  47. 2026-08-04 21:55 UTCGHSA enrichment
  48. 2026-08-04 15:10 UTCEPSS rescore
  49. 2026-08-04 10:39 UTCEPSS rescore
  50. 2026-08-04 08:33 UTCGHSA enrichment
  51. 2026-08-03 18:19 UTCEG score recompute
  52. 2026-08-03 18:19 UTCGHSA enrichment
  53. 2026-08-03 10:36 UTCEPSS rescore
  54. 2026-08-03 04:44 UTCGHSA enrichment
  55. 2026-08-02 15:37 UTCGHSA enrichment
  56. 2026-08-02 02:31 UTCEG score recompute
  57. 2026-08-02 02:31 UTCGHSA enrichment
  58. 2026-08-02 02:27 UTCEPSS rescore
  59. 2026-08-01 13:24 UTCEG score recompute
  60. 2026-08-01 13:23 UTCGHSA enrichment
  61. 2026-08-01 04:16 UTCEPSS rescore
  62. 2026-08-01 00:16 UTCGHSA enrichment
  63. 2026-07-31 11:09 UTCGHSA enrichment
  64. 2026-07-30 21:56 UTCEG score recompute
  65. 2026-07-30 21:55 UTCGHSA enrichment
  66. 2026-07-30 16:28 UTCEPSS rescore
  67. 2026-07-30 08:25 UTCEG score recompute
  68. 2026-07-30 08:25 UTCGHSA enrichment
  69. 2026-07-30 01:30 UTCEPSS rescore
  70. 2026-07-30 01:30 UTCEPSS rescore
  71. 2026-07-29 17:44 UTCGHSA enrichment
  72. 2026-07-29 04:37 UTCEG score recompute
  73. 2026-07-29 04:37 UTCGHSA enrichment
  74. 2026-07-28 15:37 UTCEPSS rescore
  75. 2026-07-28 15:27 UTCGHSA enrichment

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 28, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 93.9% of all scored CVEs.
What is the CVSS score of CVE-2026-57851?
CVE-2026-57851 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
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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