Vulnerability-Lookup

GHSA-9CV5-2H9V-98P5

Vulnerability from github – Published: 2026-07-07 18:30 – Updated: 2026-07-07 18:30

Details

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.

Severity

7.8 (High)


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

8.5 (High)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-57851"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-782"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-07T17:16:36Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-9cv5-2h9v-98p5",
  "modified": "2026-07-07T18:30:44Z",
  "published": "2026-07-07T18:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57851"
    },
    {
      "type": "WEB",
      "url": "https://github.com/readmsr/MSI_FeatureManager_CVE"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/msi-gamegaraj-kerncorelib64-sys-privilege-escalation-via-ioctl-handlers"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS: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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-57851 (GCVE-0-2026-57851)

Vulnerability from cvelistv5 – Published: 2026-07-07 16:02 – Updated: 2026-07-28 01:49

Title

MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers

Summary

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

7.8 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-07 17:00 UTC

CWE

CWE-782 - Exposed IOCTL with Insufficient Access Control

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/readmsr/MSI_FeatureManager_CVE	exploit
https://www.vulncheck.com/advisories/msi-gamegara…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Micro-Star International (MSI)	KernCoreLib64.sys	Affected: 0 , ≤ 1.0.2605.1301 (custom) cpe:2.3:a:icu-project:international_components_for_unicode::::::c\/c\+\+::*

Date Public

2026-05-12 00:00

Credits

Turan Doruk Cerit

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-57851",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-07T17:00:44.711176Z",
                "version": "2.0.3"
              },
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-07T17:00:55.161Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "KernCoreLib64.sys",
          "vendor": "Micro-Star International (MSI)",
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              "lessThanOrEqual": "1.0.2605.1301",
              "status": "affected",
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              "cpeMatch": [
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                }
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            }
          ]
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          "type": "reporter",
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          "lang": "en",
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        }
      ],
      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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      "providerMetadata": {
        "dateUpdated": "2026-07-28T01:49:47.441Z",
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      "references": [
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        },
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      ],
      "source": {
        "discovery": "EXTERNAL"
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    "datePublished": "2026-07-07T16:02:05.937Z",
    "dateReserved": "2026-06-25T18:48:00.282Z",
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.