{
  "GSD": {
    "alias": "CVE-2021-33766",
    "description": "Microsoft Exchange Information Disclosure Vulnerability",
    "id": "GSD-2021-33766"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-33766"
      ],
      "details": "Microsoft Exchange Information Disclosure Vulnerability",
      "id": "GSD-2021-33766",
      "modified": "2023-12-13T01:23:18.319149Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "cveID": "CVE-2021-33766",
      "dateAdded": "2022-01-18",
      "dueDate": "2022-02-01",
      "product": "Exchange Server",
      "requiredAction": "Apply updates per vendor instructions.",
      "shortDescription": "Microsoft Exchange Server contains an information disclosure vulnerability which can allow an unauthenticated attacker to steal email traffic from target.",
      "vendorProject": "Microsoft",
      "vulnerabilityName": "Microsoft Exchange Server Information Disclosure"
    },
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secure@microsoft.com",
        "ID": "CVE-2021-33766",
        "STATE": "PUBLIC"
      },
      "affects": {
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                    "version": {
                      "version_data": [
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                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "15.02.0858.010"
                        }
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                  },
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                          "version_affected": "\u003c",
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                          "version_name": "15.00.0",
                          "version_value": "15.00.1497.015"
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                          "version_value": "15.01.2176.012"
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                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 8",
                    "version": {
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                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "15.02.0792.013"
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            }
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
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            "lang": "eng",
            "value": "Microsoft Exchange Server Information Disclosure Vulnerability"
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Information Disclosure"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33766",
            "refsource": "MISC",
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33766"
          },
          {
            "name": "https://www.zerodayinitiative.com/advisories/ZDI-21-798/",
            "refsource": "MISC",
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-798/"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "cisaActionDue": "2022-02-01",
        "cisaExploitAdd": "2022-01-18",
        "cisaRequiredAction": "Apply updates per vendor instructions.",
        "cisaVulnerabilityName": "Microsoft Exchange Server Information Disclosure",
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*",
                    "matchCriteriaId": "DA166F2A-D83B-4D50-AD0B-668D813E0585",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*",
                    "matchCriteriaId": "28FCA0E8-7D27-4746-9731-91B834CA3E64",
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                    "matchCriteriaId": "19C1EE0C-B8DD-4B91-BE4B-1C42D72FB718",
                    "vulnerable": true
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                  {
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                    "matchCriteriaId": "44ECF39A-1DE1-4870-A494-06A53494338D",
                    "vulnerable": true
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                  {
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                    "matchCriteriaId": "71CDF29B-116B-4DE2-AFD0-B62477FF0AEB",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "Microsoft Exchange Server Information Disclosure Vulnerability"
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad de Divulgaci\u00f3n de Informaci\u00f3n de Microsoft Exchange"
          }
        ],
        "id": "CVE-2021-33766",
        "lastModified": "2023-12-28T23:15:20.547",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.0,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 7.3,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.4,
              "source": "secure@microsoft.com",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ]
        },
        "published": "2021-07-14T18:15:10.380",
        "references": [
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33766"
          },
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-798/"
          }
        ],
        "sourceIdentifier": "secure@microsoft.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-287"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    }
  }
}