CVE-2021-40456 Windows AD FS Security Feature Bypass Vulnerability

2021-10-1300:26:54

microsoft

github.com

windows ad fs

security feature bypass

vulnerability

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C

AI Score

5.3

Confidence

High

EPSS

0.002

Percentile

57.5%

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

CNA Affected

[
  {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2237:*:*:*:*:*:*:*"
    ],
    "vendor": "Microsoft",
    "product": "Windows Server 2019",
    "versions": [
      {
        "status": "affected",
        "version": "10.0.0",
        "lessThan": "10.0.17763.2237",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "x64-based Systems"
    ]
  },
  {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2237:*:*:*:*:*:*:*"
    ],
    "vendor": "Microsoft",
    "product": "Windows Server 2019 (Server Core installation)",
    "versions": [
      {
        "status": "affected",
        "version": "10.0.0",
        "lessThan": "10.0.17763.2237",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "x64-based Systems"
    ]
  },
  {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.288:*:*:*:*:*:*:*"
    ],
    "vendor": "Microsoft",
    "product": "Windows Server 2022",
    "versions": [
      {
        "status": "affected",
        "version": "10.0.0",
        "lessThan": "10.0.20348.288",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "x64-based Systems"
    ]
  },
  {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1288:*:*:*:*:*:*:*"
    ],
    "vendor": "Microsoft",
    "product": "Windows Server version 2004",
    "versions": [
      {
        "status": "affected",
        "version": "10.0.0",
        "lessThan": "10.0.19041.1288",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "x64-based Systems"
    ]
  },
  {
    "cpes": [
      "cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1288:*:*:*:*:*:*:*"
    ],
    "vendor": "Microsoft",
    "product": "Windows Server version 20H2",
    "versions": [
      {
        "status": "affected",
        "version": "10.0.0",
        "lessThan": "10.0.19042.1288",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "x64-based Systems"
    ]
  }
]