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
Elevated
7.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: Elevated riskExposed services: Not assessed

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

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
7.8HIGHmedium confidence
EG Risk
51
EG Risk 51/100

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%
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

Published

July 7, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Jul 7, 2026
No fix on record 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 7× in last 7d / 40× 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 222 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 on July 7, 2026, with the most recent update on September 24, 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 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-57851?
CVE-2026-57851 has a CVSS base score of 7.8 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-57851?
No fix for CVE-2026-57851 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-57851 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-57851

Explore →

Is Your Infrastructure Affected by CVE-2026-57851?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs