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cve[email protected]CVE-2021-34523
HistoryJul 14, 2021 - 6:15 p.m.

CVE-2021-34523

2021-07-1418:15:12
CWE-287
web.nvd.nist.gov
1312
In Wild
34
cve-2021-34523
microsoft exchange
elevation of privilege
vulnerability
nvd

7.5 High

CVSS2

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

9 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

9.3 High

AI Score

Confidence

High

0.864 High

EPSS

Percentile

98.6%

Microsoft Exchange Server Elevation of Privilege Vulnerability

Affected configurations

Vulners
NVD
Node
microsoftexchange_serverRange15.00.015.00.1497.015cumulative update 23
OR
microsoftexchange_serverRange15.02.015.02.0858.010cumulative update 9
OR
microsoftexchange_serverRange15.01.015.01.2242.008cumulative update 20
OR
microsoftexchange_serverRange15.01.015.01.2176.012cumulative update 19
OR
microsoftexchange_serverRange15.02.015.02.0792.013cumulative update 8
VendorProductVersionCPE
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 23:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 9:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 20:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 19:*:*:*:*:*:*
microsoftexchange_server*cpe:2.3:a:microsoft:exchange_server:*:cumulative update 8:*:*:*:*:*:*

CNA 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": "15.00.1497.015",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2019 Cumulative Update 9",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.02.0",
        "lessThan": "15.02.0858.010",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Exchange Server 2016 Cumulative Update 20",
    "cpes": [
      "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*"
    ],
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "15.01.0",
        "lessThan": "15.01.2242.008",
        "versionType": "custom",
        "status": "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": "15.01.2176.012",
        "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": "15.02.0792.013",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]

Social References

More

7.5 High

CVSS2

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

9 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

9.3 High

AI Score

Confidence

High

0.864 High

EPSS

Percentile

98.6%