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cve[email protected]CVE-2021-26855
HistoryMar 03, 2021 - 12:15 a.m.

CVE-2021-26855

2021-03-0300:15:12
CWE-918
web.nvd.nist.gov
2403
In Wild
405
24
cve-2021-26855
microsoft exchange server
remote code execution
vulnerability
nvd

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

AI Score

9.3

Confidence

High

EPSS

0.975

Percentile

100.0%

Microsoft Exchange Server Remote Code Execution Vulnerability

Affected configurations

Vulners
NVD
Node
microsoftexchange_serverMatch2016cumulative_update_19
Node
microsoftexchange_serverMatch2019cumulative_update_8
Node
microsoftexchange_serverMatch2019
Node
microsoftexchange_serverMatch2013cumulative_update_22
Node
microsoftexchange_serverMatch2019cumulative_update_2
Node
microsoftexchange_serverMatch2016cumulative_update_13
Node
microsoftexchange_serverMatch2013cumulative_update_23
Node
microsoftexchange_serverMatch2019cumulative_update_3
Node
microsoftexchange_serverMatch2016cumulative_update_14
Node
microsoftexchange_serverMatch2019cumulative_update_4
Node
microsoftexchange_serverMatch2016cumulative_update_15
Node
microsoftexchange_serverMatch2019cumulative_update_5
Node
microsoftexchange_serverMatch2019cumulative_update_6
Node
microsoftexchange_serverMatch2016cumulative_update_16
Node
microsoftexchange_serverMatch2016cumulative_update_17
Node
microsoftexchange_serverMatch2019cumulative_update_7
Node
microsoftexchange_serverMatch2016cumulative_update_18
Node
microsoftexchange_serverMatch2013cumulative_update_21
Node
microsoftexchange_serverMatch2016cumulative_update_12
Node
microsoftexchange_serverMatch2016cumulative_update_8
Node
microsoftexchange_serverMatch2019cumulative_update_1
Node
microsoftexchange_serverMatch2016cumulative_update_9
Node
microsoftexchange_serverMatch2016cumulative_update_10
Node
microsoftexchange_serverMatch2016cumulative_update_11
VendorProductVersionCPE
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 19:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 8:*:*:*:*:*:*
microsoftmicrosoft_exchange_server_201915.02.0cpe:2.3:a:microsoft:microsoft_exchange_server_2019:15.02.0:*:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 22:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 2:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 13:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 23:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 3:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 14:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 4:*:*:*:*:*:*
Rows per page:
1-10 of 241

CNA Affected

[
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 19",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 8",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2013 Cumulative Update 22",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_22:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.00.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 2",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_2:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 13",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2013 Cumulative Update 23",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.00.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 3",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_3:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 14",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_14:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 4",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_4:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 15",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_15:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 5",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_5:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 6",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 16",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_16:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 17",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 7",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 18",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2013 Cumulative Update 21",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.00.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 12",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 8",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 1",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_1:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 9",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_9:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 10",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 11",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_11:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "publication",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]

Social References

More

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

AI Score

9.3

Confidence

High

EPSS

0.975

Percentile

100.0%