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CVE-2026-85851

Full vulnerability record from the local CVENow database.

Description

Use after free in Windows SmartScreen allows an authorized attacker to elevate privileges locally.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-10-13 19:21:11.327000
Last modified
2026-10-29 19:40:05.963000
View original CVE JSON
{
  "id": "CVE-2026-85851",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-13T19:21:11.327",
  "lastModified": "2026-10-29T19:40:05.963",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use after free in Windows SmartScreen allows an authorized attacker to elevate privileges locally."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Windows 11 version 23H2",
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        },
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              "status": "affected"
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows 11 Version 24H2",
          "platforms": [
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            "x64-based Systems"
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          "versions": [
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              "version": "10.0.26100.0",
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows 11 Version 25H2",
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              "version": "10.0.26200.0",
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              "version": "10.0.26100.0",
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              "status": "affected"
            }
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2025 (Server Core installation)",
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              "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": "2026-10-16T00:00:00+00:00",
          "id": "CVE-2026-85851",
          "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-416"
        }
      ]
    }
  ],
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  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85851",
      "source": "[email protected]",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    }
  ]
}