Vulnerability-Lookup

CVE-2026-81579 (GCVE-0-2026-81579)

Vulnerability from cvelistv5 – Published: 2026-08-27 07:42 – Updated: 2026-08-27 13:08

Title

An untrusted Pointer Dereference can be exploited to escalate privileges by an unprivileged user on Windows

Summary

In WibuKey for Windows before version 6.71, an untrusted pointer dereference in the WibuKey2_64.sys kernel driver for 64-bit Windows allows an attacker to exploit a write-what-where primitive, enabling local privilege escalation. This can be leveraged to execute arbitrary code, run an administrator shell, or gain full control over the system.

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-27 13:05 UTC

CWE

CWE-123 - Write-what-where condition

Assigner

wibu

References

1 reference

URL	Tags
https://cdn.wibu.com/fileadmin/wibu_downloads/sec…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
wibu-systems-ag	wibukey	Affected: 0 , < 6.71 (custom) cpe:2.3:a:wibu-systems-ag:wibukey::::::::

Date Public

2025-11-12 09:00

Credits

김명규 working with Trend Micro Zero Day Initiative

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81579",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-27T13:05:36.602510Z",
                "version": "2.0.3"
              },
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-27T13:08:59.807Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "collectionURL": "https://www.wibu.com/products/wibukey.html",
          "defaultStatus": "unaffected",
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          "vendor": "wibu-systems-ag",
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              "status": "affected",
              "version": "0",
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            }
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:wibu-systems-ag:wibukey:*:*:*:*:*:*:*:*",
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              "value": "In WibuKey for Windows before version 6.71, an untrusted pointer dereference in the WibuKey2_64.sys kernel driver for 64-bit Windows allows an attacker to exploit a write-what-where primitive, enabling local privilege escalation. This can be leveraged to execute arbitrary code, run an administrator shell, or gain full control over the system."
            }
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        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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      "providerMetadata": {
        "dateUpdated": "2026-08-27T08:49:17.321Z",
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        "shortName": "wibu"
      },
      "references": [
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          "tags": [
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          "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100031.pdf"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "An untrusted Pointer Dereference can be exploited to escalate privileges by an unprivileged user on Windows",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2fc02b1f-71e7-4514-a878-169626f68903",
    "assignerShortName": "wibu",
    "cveId": "CVE-2026-81579",
    "datePublished": "2026-08-27T07:42:28.626Z",
    "dateReserved": "2026-08-27T07:34:49.654Z",
    "dateUpdated": "2026-08-27T13:08:59.807Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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      "date": "2026-08-27",
      "epss": "0.00156",
      "percentile": "0.0505"
    },
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  }
}

FKIE_CVE-2026-81579

Vulnerability from fkie_nvd - Published: 2026-08-27 10:16 - Updated: 2026-08-27 17:20

Severity

8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	2fc02b1f-71e7-4514-a878-169626f68903	https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100031.pdf

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://www.wibu.com/products/wibukey.html",
          "defaultStatus": "unaffected",
          "product": "wibukey",
          "vendor": "wibu-systems-ag",
          "versions": [
            {
              "lessThan": "6.71",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "2fc02b1f-71e7-4514-a878-169626f68903"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In WibuKey for Windows before version 6.71, an untrusted pointer dereference in the WibuKey2_64.sys kernel driver for 64-bit Windows allows an attacker to exploit a write-what-where primitive, enabling local privilege escalation. This can be leveraged to execute arbitrary code, run an administrator shell, or gain full control over the system."
    }
  ],
  "id": "CVE-2026-81579",
  "lastModified": "2026-08-27T17:20:55.370",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "2fc02b1f-71e7-4514-a878-169626f68903",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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              "exploitation": "none"
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            {
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-27T13:05:36.602510Z",
          "version": "2.0.3"
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  "published": "2026-08-27T10:16:40.457",
  "references": [
    {
      "source": "2fc02b1f-71e7-4514-a878-169626f68903",
      "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100031.pdf"
    }
  ],
  "sourceIdentifier": "2fc02b1f-71e7-4514-a878-169626f68903",
  "vulnStatus": "Received",
  "weaknesses": [
    {
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          "lang": "en",
          "value": "CWE-123"
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      "source": "2fc02b1f-71e7-4514-a878-169626f68903",
      "type": "Secondary"
    }
  ]
}

GHSA-GQQ4-6PPR-52P5

Vulnerability from github – Published: 2026-08-27 12:30 – Updated: 2026-08-27 12:30

Details

Severity

8.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-81579"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-123"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-27T10:16:40Z",
    "severity": "HIGH"
  },
  "details": "In WibuKey for Windows before version 6.71, an untrusted pointer dereference in the WibuKey2_64.sys kernel driver for 64-bit Windows allows an attacker to exploit a write-what-where primitive, enabling local privilege escalation. This can be leveraged to execute arbitrary code, run an administrator shell, or gain full control over the system.",
  "id": "GHSA-gqq4-6ppr-52p5",
  "modified": "2026-08-27T12:30:26Z",
  "published": "2026-08-27T12:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81579"
    },
    {
      "type": "WEB",
      "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100031.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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.

Action not permitted

CVE-2026-81579 (GCVE-0-2026-81579)

FKIE_CVE-2026-81579

GHSA-GQQ4-6PPR-52P5

Tags

Sightings

Nomenclature