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CVE-2026-55001

🗓️ 14 Jul 2026 17:04:49Reported by microsoftType 
cve
 cve🔗 web.nvd.nist.gov👁 5 Views

CVE-2026-55001 affects Windows Active Directory / Active Directory Domain Services. The root cause is improper certificate validation within AD, enabling an authorized attacker to achieve local privilege escalation. CVSS 3.1 base score 7.8 (Local,...

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-55001
14 Jul 202617:04
–attackerkb
Circl		CVE-2026-55001
14 Jul 202619:01
–circl
Cvelist		CVE-2026-55001 Active Directory Domain Services Elevation of Privilege Vulnerability
14 Jul 202617:04
–cvelist
EUVD		EUVD-2026-44010
14 Jul 202618:32
–euvd
Microsoft CVE		Active Directory Domain Services Elevation of Privilege Vulnerability
14 Jul 202614:00
–mscve
NCSC		Vulnerabilities in Microsoft Windows
14 Jul 202618:13
–ncsc
NVD		CVE-2026-55001
14 Jul 202617:17
–nvd
Positive Technologies		PT-2026-58245
14 Jul 202600:00
–ptsecurity
Tenable Nessus		KB5099535: Windows 10 Version 1607 / Windows Server 2016 Security Update (July 2026)
14 Jul 202600:00
–nessus
Tenable Nessus		KB5099536: Windows Server 2025 Security Update (July 2026)
14 Jul 202600:00
–nessus
Rows per page
Vulners
CNA
Node
microsoftwindows_10_1607Range10.0.14393.0–10.0.14393.9339x32
OR
microsoftwindows_10_1607Range10.0.14393.0–10.0.14393.9339x64
Node
microsoftwindows_10_1809Range10.0.17763.0–10.0.17763.9020x32
OR
microsoftwindows_10_1809Range10.0.17763.0–10.0.17763.9020x64
Node
microsoftwindows_server_2008Range10.0.14393.0–10.0.14393.9339x64
Node
microsoftwindows_server_2008Range10.0.14393.0–10.0.14393.9339server_core_installationx64
Node
microsoftwindows_server_2008Range10.0.17763.0–10.0.17763.9020x64
Node
microsoftwindows_server_2008Range10.0.17763.0–10.0.17763.9020server_core_installationx64
Node
microsoftwindows_server_2008Range10.0.20348.0–10.0.20348.5386x64
Node
microsoftwindows_server_2008Range10.0.26100.0–10.0.26100.33158x64
Node
microsoftwindows_server_2008Range10.0.26100.0–10.0.26100.33158server_core_installationx64
[
  {
    "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 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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15 Jul 2026 12:17Current
6Medium risk
Vulners AI Score6
CVSS 3.17.8
SSVC
CWE-295
5