gsd-2021-26857
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.
Aliases
Aliases



{
  "GSD": {
    "alias": "CVE-2021-26857",
    "description": "Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.",
    "id": "GSD-2021-26857"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-26857"
      ],
      "details": "Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.",
      "id": "GSD-2021-26857",
      "modified": "2023-12-13T01:23:32.990544Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cisa.gov": {
      "cveID": "CVE-2021-26857",
      "dateAdded": "2021-11-03",
      "dueDate": "2021-04-16",
      "product": "Microsoft Exchange Server",
      "requiredAction": "Apply updates per vendor instructions.",
      "shortDescription": "Microsoft Exchange Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.",
      "vendorProject": "Microsoft",
      "vulnerabilityName": "Microsoft Unified Messaging Deserialization Vulnerability"
    },
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secure@microsoft.com",
        "ID": "CVE-2021-26857",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 19",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 8",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2013 Cumulative Update 22",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.00.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 2",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 13",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2013 Cumulative Update 23",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.00.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 3",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 14",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 4",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 15",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 5",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 6",
                    "version": {
                      "version_data": [
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                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
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                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 16",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 17",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 7",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 18",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2010 Service Pack 3",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "14.0.0.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2013 Service Pack 1",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.00.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2013 Cumulative Update 21",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.00.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 12",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 8",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 1",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 9",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 10",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 11",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "publication"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Microsoft"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Microsoft Exchange Server Remote Code Execution Vulnerability"
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Remote Code Execution"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26857",
            "refsource": "MISC",
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26857"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "cisaActionDue": "2021-04-16",
        "cisaExploitAdd": "2021-11-03",
        "cisaRequiredAction": "Apply updates per vendor instructions.",
        "cisaVulnerabilityName": "Microsoft Exchange Server Remote Code Execution Vulnerability",
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2010:sp3:*:*:*:*:*:*",
                    "matchCriteriaId": "3E5EA9AD-1E84-4AB5-A1EF-3B9F2AC84755",
                    "vulnerable": true
                  },
                  {
                    "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_18:*:*:*:*:*:*",
                    "matchCriteriaId": "29805EC7-6403-44B9-91EC-109C087E98EB",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*",
                    "matchCriteriaId": "28FCA0E8-7D27-4746-9731-91B834CA3E64",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*",
                    "matchCriteriaId": "36CE5C6D-9A04-41F5-AE7C-265779833649",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*",
                    "matchCriteriaId": "44ECF39A-1DE1-4870-A494-06A53494338D",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "Microsoft Exchange Server Remote Code Execution Vulnerability"
          },
          {
            "lang": "es",
            "value": "Una Vulnerabilidad de Ejecuci\u00f3n de c\u00f3digo remota de Microsoft Exchange Server. Este ID de CVE es diferente de CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078"
          }
        ],
        "id": "CVE-2021-26857",
        "lastModified": "2023-12-29T17:16:01.073",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.8,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "secure@microsoft.com",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ]
        },
        "published": "2021-03-03T00:15:12.167",
        "references": [
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26857"
          }
        ],
        "sourceIdentifier": "secure@microsoft.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-502"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.