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CVE-2026-26181

Full vulnerability record from the local CVENow database.

Description

Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-04-14 18:16:54.590000
Last modified
2026-10-26 21:10:00.170000
View original CVE JSON
{
  "id": "CVE-2026-26181",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-14T18:16:54.590",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally."
    },
    {
      "lang": "es",
      "value": "Uso después de liberar en Microsoft Brokering File System permite a un atacante autorizado elevar privilegios localmente."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
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          "vendor": "Microsoft",
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              "status": "affected"
            }
          ]
        },
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          "platforms": [
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              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows 11 Version 24H2",
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            "x64-based Systems"
          ],
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              "version": "10.0.26100.0",
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              "status": "affected"
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows 11 Version 25H2",
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              "version": "10.0.26200.0",
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            }
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        },
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          "product": "Windows 11 version 26H1",
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        {
          "vendor": "Microsoft",
          "product": "Windows Server 2025",
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          ],
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              "version": "10.0.26100.0",
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              "versionType": "custom",
              "status": "affected"
            }
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2025 (Server Core installation)",
          "platforms": [
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          ],
          "versions": [
            {
              "version": "10.0.26100.0",
              "lessThan": "10.0.26100.32690",
              "versionType": "custom",
              "status": "affected"
            }
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        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-10T00:00:00+00:00",
          "id": "CVE-2026-26181",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        },
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
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  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26181",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}