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CVE-2026-20940

🗓️ 13 Jan 2026 17:56:44Reported by microsoftType 
cve
 cve🔗 web.nvd.nist.gov👁 26 Views

CVE-2026-20940 heap-based overflow in Cloud Files Mini Filter Driver enables local escalation.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-20940
13 Jan 202617:56
–attackerkb
Circl		CVE-2026-20940
13 Jan 202618:01
–circl
CNNVD		Microsoft Windows Cloud Files Mini Filter Driver 安全漏洞
13 Jan 202600:00
–cnnvd
CNVD		Microsoft Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
19 Jan 202600:00
–cnvd
Cvelist		CVE-2026-20940 Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
13 Jan 202617:56
–cvelist
EUVD		EUVD-2026-2120
13 Jan 202617:56
–euvd
Japan Vulnerability Notes		Security information for Hitachi Disk Array Systems
20 Feb 202609:35
–jvn
Microsoft KB		January 13, 2026—KB5073455 (OS Build 22631.6491)
13 Jan 202616:00
–mskb
Microsoft KB		January 13, 2026—KB5073457 (OS Build 20348.4648)
13 Jan 202616:00
–mskb
Microsoft KB		January 13, 2026—KB5073695 (Monthly Rollup)
13 Jan 202616:00
–mskb
Rows per page
NVD
Vulners
CNA
Node
microsoftwindows_10_1607Range<10.0.14393.8783x64
OR
microsoftwindows_10_1607Range<10.0.14393.8783x86
OR
microsoftwindows_10_1809Range<10.0.17763.8276x64
OR
microsoftwindows_10_1809Range<10.0.17763.8276x86
OR
microsoftwindows_10_21h2Range<10.0.19044.6809arm64
OR
microsoftwindows_10_21h2Range<10.0.19044.6809x64
OR
microsoftwindows_10_21h2Range<10.0.19044.6809x86
OR
microsoftwindows_10_22h2Range<10.0.19045.6809arm64
OR
microsoftwindows_10_22h2Range<10.0.19045.6809x64
OR
microsoftwindows_10_22h2Range<10.0.19045.6809x86
OR
microsoftwindows_11_23h2Range<10.0.22631.6491arm64
OR
microsoftwindows_11_23h2Range<10.0.22631.6491x64
OR
microsoftwindows_server_2008Match-sp2x64
OR
microsoftwindows_server_2008Match-sp2x86
OR
microsoftwindows_server_2008Matchr2sp1x64
OR
microsoftwindows_server_2012Match-
OR
microsoftwindows_server_2012Matchr2
OR
microsoftwindows_server_2016Range<10.0.14393.8783
OR
microsoftwindows_server_2019Range<10.0.17763.8276
OR
microsoftwindows_server_2022Range<10.0.20348.4648
[
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1607",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.8783",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1809",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.8276",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 21H2",
    "platforms": [
      "32-bit Systems",
      "ARM64-based Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.19044.0",
        "lessThan": "10.0.19044.6809",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 22H2",
    "platforms": [
      "32-bit Systems",
      "ARM64-based Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.19045.0",
        "lessThan": "10.0.19045.6809",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 11 version 22H3",
    "platforms": [
      "ARM64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.22631.0",
        "lessThan": "10.0.22631.6491",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 11 Version 23H2",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.22631.0",
        "lessThan": "10.0.22631.6491",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2008 R2 Service Pack 1",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.1.7601.0",
        "lessThan": "6.1.7601.28117",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2008 R2 Service Pack 1 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.1.7601.0",
        "lessThan": "6.1.7601.28117",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2008 Service Pack 2",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.0.6003.0",
        "lessThan": "6.0.6003.23717",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2008 Service Pack 2 (Server Core installation)",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.0.6003.0",
        "lessThan": "6.0.6003.23717",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.2.9200.0",
        "lessThan": "6.2.9200.25868",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.2.9200.0",
        "lessThan": "6.2.9200.25868",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 R2",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.3.9600.0",
        "lessThan": "6.3.9600.22968",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 R2 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.3.9600.0",
        "lessThan": "6.3.9600.22968",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2016",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.8783",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2016 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.8783",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2019",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.8276",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2019 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.8276",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2022",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.20348.0",
        "lessThan": "10.0.20348.4648",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]

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01 Apr 2026 13:48Current
7High risk
Vulners AI Score7
CVSS 3.17.8
EPSS0.0005
SSVC
CWE-822
heap overflowwindows cloud filesmini filter driverlocal escalationprivilege escalation
26