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CVE-2026-21244

🗓️ 10 Feb 2026 17:51:43Reported by microsoftType 
cve
 cve🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 11 Views

CVE-2026-21244 is a Windows Hyper-V remote code execution vulnerability.

Related
Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-21244
10 Feb 202617:51
–attackerkb
Circl		CVE-2026-21244
10 Feb 202617:30
–circl
CNNVD		Microsoft Hyper-V 安全漏洞
10 Feb 202600:00
–cnnvd
Cvelist		CVE-2026-21244 Windows Hyper-V Remote Code Execution Vulnerability
10 Feb 202617:51
–cvelist
Exploit DB		Windows 11 25H2 - Heap Overflow
30 Apr 202600:00
–exploitdb
Japan Vulnerability Notes		Security information for Hitachi Disk Array Systems
31 Mar 202606:53
–jvn
Microsoft KB		February 10, 2026—KB5075897 (OS Build 25398.2149)
10 Feb 202616:00
–mskb
Microsoft KB		February 10, 2026—KB5075899 (OS Build 26100.32370)
10 Feb 202616:00
–mskb
Microsoft KB		February 10, 2026—KB5075904 (OS Build 17763.8389)
10 Feb 202616:00
–mskb
Microsoft KB		February 10, 2026—KB5075906 (OS Build 20348.4773)
10 Feb 202616:00
–mskb
Rows per page
NVD
Vulners
CNA
Node
microsoftwindows_10_1607Range<10.0.14393.8868x64
OR
microsoftwindows_10_1809Range<10.0.17763.8389x64
OR
microsoftwindows_10_21h2Range<10.0.19044.6937x64
OR
microsoftwindows_10_22h2Range<10.0.19045.6937x64
OR
microsoftwindows_11_23h2Range<10.0.22631.6649arm64
OR
microsoftwindows_11_23h2Range<10.0.22631.6649x64
OR
microsoftwindows_11_24h2Range<10.0.26100.7781arm64
OR
microsoftwindows_11_24h2Range<10.0.26100.7781x64
OR
microsoftwindows_11_25h2Range<10.0.26200.7781arm64
OR
microsoftwindows_11_25h2Range<10.0.26200.7781x64
OR
microsoftwindows_server_2016Range<10.0.14393.8868
OR
microsoftwindows_server_2019Range<10.0.17763.8389
OR
microsoftwindows_server_2022Range<10.0.20348.4711
OR
microsoftwindows_server_2022_23h2Range<10.0.25398.2149
OR
microsoftwindows_server_2025Range<10.0.26100.32313
[
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1607",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.8868",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1809",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.8389",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 21H2",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.19044.0",
        "lessThan": "10.0.19044.6937",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 22H2",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.19045.0",
        "lessThan": "10.0.19045.6937",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 11 version 22H3",
    "platforms": [
      "ARM64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.22631.0",
        "lessThan": "10.0.22631.6649",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 11 Version 23H2",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.22631.0",
        "lessThan": "10.0.22631.6649",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 11 Version 24H2",
    "platforms": [
      "ARM64-based Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.26100.0",
        "lessThan": "10.0.26100.7840",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 11 Version 25H2",
    "versions": [
      {
        "version": "10.0.26200.0",
        "lessThan": "10.0.26200.7840",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 11 version 26H1",
    "platforms": [
      "ARM64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.28000.0",
        "lessThan": "10.0.28000.1575",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 11 Version 26H1",
    "versions": [
      {
        "version": "10.0.28000.0",
        "lessThan": "10.0.28000.1575",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2016",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.8868",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2016 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.8868",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2019",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.8389",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2019 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.8389",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2022",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.20348.0",
        "lessThan": "10.0.20348.4773",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2022, 23H2 Edition (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.25398.0",
        "lessThan": "10.0.25398.2149",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.26100.0",
        "lessThan": "10.0.26100.32370",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.26100.0",
        "lessThan": "10.0.26100.32370",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]

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11 May 2026 21:25Current
6Medium risk
Vulners AI Score6
CVSS 3.17.3
EPSS0.00408
SSVC
CWE-122CWE-787
Windows Hyper-VRemote code executionVulnerability
11