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CVE-2026-50304 Windows Active Directory Federation Services Denial of Service Vulnerability

🗓️ 14 Jul 2026 17:06:22Reported by microsoftType 
cvelist
 cvelist🔗 www.cve.org👁 52 Views

CVE-2026-50304 describes a denial of service vulnerability in Windows Active Directory Federation Services.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb		CVE-2026-50304
14 Jul 202617:06
–attackerkb
bdu_fstec
BDU FSTEC		ADFS DoS
20 Jul 202600:00
–bdu_fstec
circl
Circl		CVE-2026-50304
14 Jul 202619:01
–circl
cve
CVE		CVE-2026-50304
14 Jul 202617:06
–cve
euvd
EUVD		EUVD-2026-43855
14 Jul 202618:32
–euvd
jvn
Japan Vulnerability Notes		Security information for Hitachi Disk Array Systems
14 Sep 202603:27
–jvn
mskb
Microsoft KB		July 14, 2026—KB5099535 (OS Build 14393.9339)
13 Oct 202614:00
–mskb
mskb
Microsoft KB		July 14, 2026—KB5099536 (OS Build 26100.33158)
13 Oct 202614:00
–mskb
mskb
Microsoft KB		July 14, 2026—KB5099538 (OS Build 17763.9020)
13 Oct 202614:00
–mskb
mskb
Microsoft KB		July 14, 2026—KB5099540 (OS Build 20348.5386)
13 Oct 202614:00
–mskb
Rows per page
[
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 3.5 AND 4.7.2",
    "platforms": [
      "Windows 10 Version 1607 for 32-bit Systems",
      "Windows 10 Version 1607 for x64-based Systems",
      "Windows 10 Version 1809 for 32-bit Systems",
      "Windows 10 Version 1809 for x64-based Systems",
      "Windows Server 2016",
      "Windows Server 2016 (Server Core installation)",
      "Windows Server 2019",
      "Windows Server 2019 (Server Core installation)"
    ],
    "versions": [
      {
        "version": "4.7.0",
        "lessThan": "2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 3.5 AND 4.8",
    "platforms": [
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      "Windows 10 Version 21H2 for 32-bit Systems",
      "Windows 10 Version 21H2 for ARM64-based Systems",
      "Windows 10 Version 21H2 for x64-based Systems",
      "Windows 10 Version 22H2 for 32-bit Systems",
      "Windows 10 Version 22H2 for ARM64-based Systems",
      "Windows 10 Version 22H2 for x64-based Systems",
      "Windows Server 2019",
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      "Windows Server 2022",
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    ],
    "versions": [
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    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 3.5 AND 4.8.1",
    "platforms": [
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      "Windows 10 Version 22H2 for ARM64-based Systems",
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      "Windows 11 Version 23H2 for x64-based Systems",
      "Windows 11 Version 24H2 for ARM64-based Systems",
      "Windows 11 Version 24H2 for x64-based Systems",
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      "Windows 11 Version 25H2 for x64-based Systems",
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    ],
    "versions": [
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    "vendor": "Microsoft",
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    "platforms": [
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    ],
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  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 4.8",
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    ],
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  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 4.8.1",
    "platforms": [
      "Windows 11 Version 26H1 for ARM64-based Systems",
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    ],
    "versions": [
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    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1809",
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  },
  {
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    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
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        "lessThan": "6.3.9600.23291",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 R2 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
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        "versionType": "custom",
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      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2016",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.9339",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2016 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
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      }
    ]
  },
  {
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    "platforms": [
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  {
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  {
    "vendor": "Microsoft",
    "product": "Windows Server 2022",
    "platforms": [
      "x64-based Systems"
    ],
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      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025",
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      "x64-based Systems"
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      }
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    "vendor": "Microsoft",
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    ],
    "versions": [
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        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]

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28 Oct 2026 20:03Current
CVSS 3.17.5
EPSS0.01174
SSVC
CWE-121
CVE 2026 50304WindowsActive DirectoryFederation ServicesDenial of Service
52