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CVE-2026-56155

🗓️ 14 Jul 2026 17:05:11Reported by microsoftType 
cve
 cve🔗 web.nvd.nist.gov📰️ 3 Media mentions👁 46 Views

Insufficient granularity of access control in Active Directory Federation Services (AD FS) allows an authorized attacker to elevate privileges locally.

Related
Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-56155
14 Jul 202617:05
–attackerkb
Circl		CVE-2026-56155
14 Jul 202618:00
–circl
CISA KEV Catalog		Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability
14 Jul 202600:00
–cisa_kev
Cvelist		CVE-2026-56155 Active Directory Federation Services Elevation of Privilege Vulnerability
14 Jul 202617:05
–cvelist
EUVD		EUVD-2026-44042
14 Jul 202618:32
–euvd
Microsoft KB		July 14, 2026—KB5099444 (Monthly Rollup)
14 Jul 202614:00
–mskb
Microsoft KB		July 14, 2026—KB5099445 (Monthly Rollup)
14 Jul 202614:00
–mskb
Microsoft KB		July 14, 2026—KB5099535 (OS Build 14393.9339)
14 Jul 202614:00
–mskb
Microsoft KB		July 14, 2026—KB5099538 (OS Build 17763.9020)
14 Jul 202614:00
–mskb
Microsoft CVE		Active Directory Federation Services Elevation of Privilege Vulnerability
14 Jul 202614:00
–mscve
Rows per page
NVD
Vulners
CNA
Node
microsoftwindows_10_1607Range<10.0.14393.9339x64
OR
microsoftwindows_10_1607Range<10.0.14393.9339x86
OR
microsoftwindows_10_1809Range<10.0.17763.9020x64
OR
microsoftwindows_10_1809Range<10.0.17763.9020x86
OR
microsoftwindows_server_2012Match-
OR
microsoftwindows_server_2012Matchr2
OR
microsoftwindows_server_2016Range<10.0.14393.9339
OR
microsoftwindows_server_2019Range<10.0.17763.9020
OR
microsoftwindows_server_2022Range<10.0.20348.5386
OR
microsoftwindows_server_2025Range<10.0.26100.33158
[
  {
    "vendor": "Microsoft",
    "product": "Windows 10 Version 1607",
    "platforms": [
      "32-bit Systems",
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.9339",
        "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": "10.0.17763.9020",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.2.9200.0",
        "lessThan": "6.2.9200.26226",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.2.9200.0",
        "lessThan": "6.2.9200.26226",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 R2",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.3.9600.0",
        "lessThan": "6.3.9600.23291",
        "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": "6.3.9600.23291",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "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": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.9339",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2019",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.9020",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2019 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.9020",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2022",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.20348.0",
        "lessThan": "10.0.20348.5386",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.26100.0",
        "lessThan": "10.0.26100.33158",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.26100.0",
        "lessThan": "10.0.26100.33158",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]

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14 Jul 2026 21:07Current
6Medium risk
Vulners AI Score6
CVSS 3.17.8
SSVC
CWE-1220In Wild
46