Vulnerability-Lookup

GHSA-GQQ4-6PPR-52P5

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

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.

Severity

8.8 (High)


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

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{
  "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"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-08-27 07:42 – Updated: 2026-08-28 03:55

Title

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

Summary

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 00:00 UTC

CWE

CWE-123 - Write-what-where condition

Assigner

wibu ENISA root

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
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

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81579",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-27T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-28T03:55:30.936Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:wibu-systems-ag:wibukey:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.71",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "\uae40\uba85\uaddc working with Trend Micro Zero Day Initiative"
        }
      ],
      "datePublic": "2025-11-12T09:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "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": [
        {
          "cvssV3_1": {
            "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"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
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      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-123",
              "description": "CWE-123 Write-what-where condition",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T08:49:17.321Z",
        "orgId": "2fc02b1f-71e7-4514-a878-169626f68903",
        "shortName": "wibu"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "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": {
        "engine": "Vulnogram 1.0.0-beta"
      }
    }
  },
  "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": "2026-08-28T03:55:30.936Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.

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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.

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GHSA-GQQ4-6PPR-52P5

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

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