{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [],
  "affected_systems_content": "",
  "closed_at": "2022-05-04",
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-31207",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31207"
    },
    {
      "name": "CVE-2021-34473",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34473"
    },
    {
      "name": "CVE-2021-34523",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34523"
    }
  ],
  "links": [
    {
      "title": "[2] Avis de s\u00e9curit\u00e9\u00a0CERTFR-2021-AVI-522 du 15 juillet 2021",
      "url": "https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-522/"
    },
    {
      "title": "[5] Guide de s\u00e9curit\u00e9 de l\u0027ANSSI",
      "url": "https://www.ssi.gouv.fr/guide/recommandations-sur-le-nomadisme-numerique/"
    },
    {
      "title": "[3] Bulletin d\u0027actualit\u00e9 CERTFR-2021-ACT-030 du 19 juillet 2021",
      "url": "https://www.cert.ssi.gouv.fr/actualite/CERTFR-2021-ACT-030/"
    },
    {
      "title": "[1] Bulletin d\u0027actualit\u00e9 CERTFR-2021-ACT-035 du 12 ao\u00fbt 2021",
      "url": "https://www.cert.ssi.gouv.fr/actualite/CERTFR-2021-ACT-035/"
    },
    {
      "title": "[4] Avis de s\u00e9curit\u00e9\u00a0CERTFR-2021-AVI-369 du 12 mai 2021",
      "url": "https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-369/"
    }
  ],
  "reference": "CERTFR-2021-ALE-017",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-08-27T00:00:00.000000"
    },
    {
      "description": "Cl\u00f4ture de l\u0027alerte. Cela ne signifie pas la fin d\u0027une menace. Seule l\u0027application de la mise \u00e0 jour permet de vous pr\u00e9munir contre l\u0027exploitation de la vuln\u00e9rabilit\u00e9 correspondante.",
      "revision_date": "2022-05-04T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "Dans son bulletin d\u0027actualit\u00e9 CERTFR-2021-ACT-035 du 12 ao\u00fbt 2021\n[\\[1\\]](http://suite%20\u00e0%20la%20publication%20d\u0027une%20technique%20permettant%20de%20prendre%20le%20contr\u00f4le%20d\u0027un%20serveur%20Microsoft%20Exchange),\nle CERT-FR revenait sur la publication d\u0027une technique permettant de\nprendre le contr\u00f4le d\u0027un serveur Microsoft Exchange. La technique,\nd\u00e9nomm\u00e9e \"*ProxyShell*\" s\u0027appuie sur l\u0027existence de plusieurs\nvuln\u00e9rabilit\u00e9s corrig\u00e9es en avril et en mai 2021\n[\\[4\\]](/avis/CERTFR-2021-AVI-369/) (mais\nannonc\u00e9es en juillet)\n[\\[2\\]](/avis/CERTFR-2021-AVI-522/)\n[\\[3\\]](/actualite/CERTFR-2021-ACT-030/).\n\nR\u00e9cemment, le CERT-FR a pris connaissance d\u0027activit\u00e9s malveillantes qui\npourraient-\u00eatre bas\u00e9es sur une exploitation de ces vuln\u00e9rabilit\u00e9s et\nciblant les serveurs Microsoft Exchange d\u0027entit\u00e9s fran\u00e7aises.\n\nLe CERT-FR a signal\u00e9 l\u0027existence de serveurs vuln\u00e9rables expos\u00e9s sur\nInternet \u00e0 leurs propri\u00e9taires, mais sans possibilit\u00e9 d\u0027exhaustivit\u00e9.\nPar cons\u00e9quent le CERT-FR rappelle les recommandations suivantes :\n\n-   appliquer imm\u00e9diatement les correctifs de s\u00e9curit\u00e9 fournis par\n    l\u2019\u00e9diteur sur l\u2019ensemble des serveurs Exchange vuln\u00e9rables expos\u00e9s\n    sur Internet puis en interne ;\n-   proc\u00e9der \u00e0 l\u2019analyse des serveurs Exchange afin d\u2019identifier une\n    possible activit\u00e9 anormale \u00e0 l\u0027aide des informations fournies dans\n    notre bulletin CERTFR-2021-ACT-035 et la pr\u00e9sence de *webshells* ;\n-   en cas de compromission, contr\u00f4ler le syst\u00e8me d\u2019information pour\n    d\u00e9tecter d\u2019\u00e9ventuelles lat\u00e9ralisations ainsi qu\u2019une compromission\n    des serveurs Active Directory.\n\nEnfin, le CERT-FR rappelle que les serveurs Microsoft Exchange ne\ndevraient pas \u00eatre expos\u00e9s sans protection sur Internet. Il est\nfortement recommand\u00e9 d\u2019appliquer les bonnes pratiques publi\u00e9es par\nl\u2019ANSSI pour ce type service\n[\\[5\\]](https://www.ssi.gouv.fr/guide/recommandations-sur-le-nomadisme-numerique/).\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Microsoft Exchange",
  "vendor_advisories": []
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [],
  "affected_systems_content": "",
  "closed_at": "2022-05-04",
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-31207",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31207"
    },
    {
      "name": "CVE-2021-34473",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34473"
    },
    {
      "name": "CVE-2021-34523",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34523"
    }
  ],
  "links": [
    {
      "title": "[2] Avis de s\u00e9curit\u00e9\u00a0CERTFR-2021-AVI-522 du 15 juillet 2021",
      "url": "https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-522/"
    },
    {
      "title": "[5] Guide de s\u00e9curit\u00e9 de l\u0027ANSSI",
      "url": "https://www.ssi.gouv.fr/guide/recommandations-sur-le-nomadisme-numerique/"
    },
    {
      "title": "[3] Bulletin d\u0027actualit\u00e9 CERTFR-2021-ACT-030 du 19 juillet 2021",
      "url": "https://www.cert.ssi.gouv.fr/actualite/CERTFR-2021-ACT-030/"
    },
    {
      "title": "[1] Bulletin d\u0027actualit\u00e9 CERTFR-2021-ACT-035 du 12 ao\u00fbt 2021",
      "url": "https://www.cert.ssi.gouv.fr/actualite/CERTFR-2021-ACT-035/"
    },
    {
      "title": "[4] Avis de s\u00e9curit\u00e9\u00a0CERTFR-2021-AVI-369 du 12 mai 2021",
      "url": "https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-369/"
    }
  ],
  "reference": "CERTFR-2021-ALE-017",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-08-27T00:00:00.000000"
    },
    {
      "description": "Cl\u00f4ture de l\u0027alerte. Cela ne signifie pas la fin d\u0027une menace. Seule l\u0027application de la mise \u00e0 jour permet de vous pr\u00e9munir contre l\u0027exploitation de la vuln\u00e9rabilit\u00e9 correspondante.",
      "revision_date": "2022-05-04T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "Dans son bulletin d\u0027actualit\u00e9 CERTFR-2021-ACT-035 du 12 ao\u00fbt 2021\n[\\[1\\]](http://suite%20\u00e0%20la%20publication%20d\u0027une%20technique%20permettant%20de%20prendre%20le%20contr\u00f4le%20d\u0027un%20serveur%20Microsoft%20Exchange),\nle CERT-FR revenait sur la publication d\u0027une technique permettant de\nprendre le contr\u00f4le d\u0027un serveur Microsoft Exchange. La technique,\nd\u00e9nomm\u00e9e \"*ProxyShell*\" s\u0027appuie sur l\u0027existence de plusieurs\nvuln\u00e9rabilit\u00e9s corrig\u00e9es en avril et en mai 2021\n[\\[4\\]](/avis/CERTFR-2021-AVI-369/) (mais\nannonc\u00e9es en juillet)\n[\\[2\\]](/avis/CERTFR-2021-AVI-522/)\n[\\[3\\]](/actualite/CERTFR-2021-ACT-030/).\n\nR\u00e9cemment, le CERT-FR a pris connaissance d\u0027activit\u00e9s malveillantes qui\npourraient-\u00eatre bas\u00e9es sur une exploitation de ces vuln\u00e9rabilit\u00e9s et\nciblant les serveurs Microsoft Exchange d\u0027entit\u00e9s fran\u00e7aises.\n\nLe CERT-FR a signal\u00e9 l\u0027existence de serveurs vuln\u00e9rables expos\u00e9s sur\nInternet \u00e0 leurs propri\u00e9taires, mais sans possibilit\u00e9 d\u0027exhaustivit\u00e9.\nPar cons\u00e9quent le CERT-FR rappelle les recommandations suivantes :\n\n-   appliquer imm\u00e9diatement les correctifs de s\u00e9curit\u00e9 fournis par\n    l\u2019\u00e9diteur sur l\u2019ensemble des serveurs Exchange vuln\u00e9rables expos\u00e9s\n    sur Internet puis en interne ;\n-   proc\u00e9der \u00e0 l\u2019analyse des serveurs Exchange afin d\u2019identifier une\n    possible activit\u00e9 anormale \u00e0 l\u0027aide des informations fournies dans\n    notre bulletin CERTFR-2021-ACT-035 et la pr\u00e9sence de *webshells* ;\n-   en cas de compromission, contr\u00f4ler le syst\u00e8me d\u2019information pour\n    d\u00e9tecter d\u2019\u00e9ventuelles lat\u00e9ralisations ainsi qu\u2019une compromission\n    des serveurs Active Directory.\n\nEnfin, le CERT-FR rappelle que les serveurs Microsoft Exchange ne\ndevraient pas \u00eatre expos\u00e9s sans protection sur Internet. Il est\nfortement recommand\u00e9 d\u2019appliquer les bonnes pratiques publi\u00e9es par\nl\u2019ANSSI pour ce type service\n[\\[5\\]](https://www.ssi.gouv.fr/guide/recommandations-sur-le-nomadisme-numerique/).\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Microsoft Exchange",
  "vendor_advisories": []
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Microsoft Exchange Server 2013 Cumulative Update 23",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics 365 Business Central 2021 Release Wave 1 - Update 18.3",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2016 Cumulative Update 21",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2016 Cumulative Update 19",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "HEVC Video Extensions",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2019 Cumulative Update 8",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Malware Protection Engine",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Power BI Report Server",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Visual Studio Code",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft 365 Apps pour Enterprise pour syst\u00e8mes 32 bits",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft 365 Apps pour Enterprise pour 64 bits Systems",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2019 Cumulative Update 10",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics 365 Business Central 2020 Release Wave 1 - Update 16.14",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2016 Cumulative Update 20",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Bing Search pour Android",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2019 Cumulative Update 9",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics 365 Business Central 2020 Release Wave 2 - Update 17.8",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Open Enclave SDK",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-31984",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31984"
    },
    {
      "name": "CVE-2021-33777",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33777"
    },
    {
      "name": "CVE-2021-34470",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34470"
    },
    {
      "name": "CVE-2021-34528",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34528"
    },
    {
      "name": "CVE-2021-34501",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34501"
    },
    {
      "name": "CVE-2021-34464",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34464"
    },
    {
      "name": "CVE-2021-34522",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34522"
    },
    {
      "name": "CVE-2021-31947",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31947"
    },
    {
      "name": "CVE-2021-34523",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34523"
    },
    {
      "name": "CVE-2021-34479",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34479"
    },
    {
      "name": "CVE-2021-33766",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33766"
    },
    {
      "name": "CVE-2021-34452",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34452"
    },
    {
      "name": "CVE-2021-33768",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33768"
    },
    {
      "name": "CVE-2021-33767",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33767"
    },
    {
      "name": "CVE-2021-33775",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33775"
    },
    {
      "name": "CVE-2021-33778",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33778"
    },
    {
      "name": "CVE-2021-31196",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31196"
    },
    {
      "name": "CVE-2021-34469",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34469"
    },
    {
      "name": "CVE-2021-31206",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31206"
    },
    {
      "name": "CVE-2021-33753",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33753"
    },
    {
      "name": "CVE-2021-33776",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33776"
    },
    {
      "name": "CVE-2021-34474",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34474"
    },
    {
      "name": "CVE-2021-34473",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34473"
    },
    {
      "name": "CVE-2021-34529",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34529"
    }
  ],
  "links": [],
  "reference": "CERTFR-2021-AVI-522",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-07-15T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Usurpation d\u0027identit\u00e9"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "Contournement de la fonctionnalit\u00e9 de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 corrig\u00e9es dans \u003cspan\nclass=\"textit\"\u003eles produits Microsoft\u003c/span\u003e. Elles permettent \u00e0 un\nattaquant de provoquer une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es,\nune usurpation d\u0027identit\u00e9, une ex\u00e9cution de code \u00e0 distance, un\ncontournement de la fonctionnalit\u00e9 de s\u00e9curit\u00e9 et une \u00e9l\u00e9vation de\nprivil\u00e8ges.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Microsoft",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Microsoft du 14 juillet 2021",
      "url": "https://msrc.microsoft.com/update-guide/"
    }
  ]
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Microsoft Exchange Server 2013 Cumulative Update 23",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics 365 Business Central 2021 Release Wave 1 - Update 18.3",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2016 Cumulative Update 21",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2016 Cumulative Update 19",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "HEVC Video Extensions",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2019 Cumulative Update 8",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Malware Protection Engine",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Power BI Report Server",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Visual Studio Code",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft 365 Apps pour Enterprise pour syst\u00e8mes 32 bits",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft 365 Apps pour Enterprise pour 64 bits Systems",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2019 Cumulative Update 10",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics 365 Business Central 2020 Release Wave 1 - Update 16.14",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2016 Cumulative Update 20",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Bing Search pour Android",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Exchange Server 2019 Cumulative Update 9",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Microsoft Dynamics 365 Business Central 2020 Release Wave 2 - Update 17.8",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    },
    {
      "description": "Open Enclave SDK",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Microsoft",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-31984",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31984"
    },
    {
      "name": "CVE-2021-33777",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33777"
    },
    {
      "name": "CVE-2021-34470",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34470"
    },
    {
      "name": "CVE-2021-34528",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34528"
    },
    {
      "name": "CVE-2021-34501",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34501"
    },
    {
      "name": "CVE-2021-34464",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34464"
    },
    {
      "name": "CVE-2021-34522",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34522"
    },
    {
      "name": "CVE-2021-31947",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31947"
    },
    {
      "name": "CVE-2021-34523",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34523"
    },
    {
      "name": "CVE-2021-34479",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34479"
    },
    {
      "name": "CVE-2021-33766",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33766"
    },
    {
      "name": "CVE-2021-34452",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34452"
    },
    {
      "name": "CVE-2021-33768",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33768"
    },
    {
      "name": "CVE-2021-33767",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33767"
    },
    {
      "name": "CVE-2021-33775",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33775"
    },
    {
      "name": "CVE-2021-33778",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33778"
    },
    {
      "name": "CVE-2021-31196",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31196"
    },
    {
      "name": "CVE-2021-34469",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34469"
    },
    {
      "name": "CVE-2021-31206",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31206"
    },
    {
      "name": "CVE-2021-33753",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33753"
    },
    {
      "name": "CVE-2021-33776",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33776"
    },
    {
      "name": "CVE-2021-34474",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34474"
    },
    {
      "name": "CVE-2021-34473",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34473"
    },
    {
      "name": "CVE-2021-34529",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34529"
    }
  ],
  "links": [],
  "reference": "CERTFR-2021-AVI-522",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-07-15T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Usurpation d\u0027identit\u00e9"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "Contournement de la fonctionnalit\u00e9 de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 corrig\u00e9es dans \u003cspan\nclass=\"textit\"\u003eles produits Microsoft\u003c/span\u003e. Elles permettent \u00e0 un\nattaquant de provoquer une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es,\nune usurpation d\u0027identit\u00e9, une ex\u00e9cution de code \u00e0 distance, un\ncontournement de la fonctionnalit\u00e9 de s\u00e9curit\u00e9 et une \u00e9l\u00e9vation de\nprivil\u00e8ges.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Microsoft",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Microsoft du 14 juillet 2021",
      "url": "https://msrc.microsoft.com/update-guide/"
    }
  ]
}

{
  "CVSS 2.0": "AV:L/AC:L/Au:N/C:C/I:C/A:N",
  "CVSS 3.0": "AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Microsoft Corp",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "2016 Cumulative Update 19 (Microsoft Exchange Server), 2013 Cumulative Update 23 (Microsoft Exchange Server), 2019 Cumulative Update 8 (Microsoft Exchange Server), 2019 Cumulative Update 9 (Microsoft Exchange Server), 2016 Cumulative Update 20 (Microsoft Exchange Server)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34523",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "13.07.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "24.09.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "18.08.2021",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2021-04126",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2021-34523",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Microsoft Exchange Server",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Microsoft Exchange Server, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043e\u0448\u0438\u0431\u043a\u0430\u043c\u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u044f\u043c\u0438, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u044f, \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0438 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u043e\u043c (CWE-264)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Microsoft Exchange Server \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043e\u0448\u0438\u0431\u043a\u0430\u043c\u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u044f\u043c\u0438. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u0435 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://www.cybersecurity-help.cz/vdb/SB2021071319\nhttps://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34523\nhttp://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html\nhttps://www.cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-264",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6,6)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,7)"
}

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*"
          ],
          "platforms": [
            "x64-based Systems"
          ],
          "product": "Microsoft Exchange Server 2013 Cumulative Update 23",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "15.00.1497.015",
              "status": "affected",
              "version": "15.00.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*"
          ],
          "platforms": [
            "x64-based Systems"
          ],
          "product": "Microsoft Exchange Server 2019 Cumulative Update 9",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "15.02.0858.010",
              "status": "affected",
              "version": "15.02.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*"
          ],
          "platforms": [
            "x64-based Systems"
          ],
          "product": "Microsoft Exchange Server 2016 Cumulative Update 20",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "15.01.2242.008",
              "status": "affected",
              "version": "15.01.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*"
          ],
          "platforms": [
            "x64-based Systems"
          ],
          "product": "Microsoft Exchange Server 2016 Cumulative Update 19",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "15.01.2176.012",
              "status": "affected",
              "version": "15.01.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*"
          ],
          "platforms": [
            "x64-based Systems"
          ],
          "product": "Microsoft Exchange Server 2019 Cumulative Update 8",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "15.02.0792.013",
              "status": "affected",
              "version": "15.02.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "cisaActionDue": "2021-11-17",
  "cisaExploitAdd": "2021-11-03",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "Microsoft Exchange Server Privilege Escalation Vulnerability",
  "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",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*",
              "matchCriteriaId": "19C1EE0C-B8DD-4B91-BE4B-1C42D72FB718",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*",
              "matchCriteriaId": "44ECF39A-1DE1-4870-A494-06A53494338D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*",
              "matchCriteriaId": "71CDF29B-116B-4DE2-AFD0-B62477FF0AEB",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Exchange Server Elevation of Privilege Vulnerability"
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Elevaci\u00f3n de Privilegios de Microsoft Exchange Server. Este ID de CVE es diferente de CVE-2021-33768, CVE-2021-34470"
    }
  ],
  "id": "CVE-2021-34523",
  "lastModified": "2026-06-17T03:56:03.623",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 9.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.8,
        "source": "secure@microsoft.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-34523",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-02-04T19:06:53.750452Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2021-07-14T18:15:12.347",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html"
    },
    {
      "source": "secure@microsoft.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523"
    },
    {
      "source": "secure@microsoft.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-822/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-822/"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-34523"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2021-34523"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269",
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-07-14T18:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Microsoft Exchange Server Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-33768, CVE-2021-34470.",
  "id": "GHSA-gcrr-725q-f8jw",
  "modified": "2025-10-22T00:32:18Z",
  "published": "2022-05-24T19:07:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34523"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-34523"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-822"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "GSD": {
    "alias": "CVE-2021-34523",
    "description": "Microsoft Exchange Server Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-33768, CVE-2021-34470.",
    "id": "GSD-2021-34523",
    "references": [
      "https://packetstormsecurity.com/files/cve/CVE-2021-34523"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-34523"
      ],
      "details": "Microsoft Exchange Server Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-33768, CVE-2021-34470.",
      "id": "GSD-2021-34523",
      "modified": "2023-12-13T01:23:14.424396Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cisa.gov": {
      "cveID": "CVE-2021-34523",
      "dateAdded": "2021-11-03",
      "dueDate": "2021-11-17",
      "product": "Microsoft Exchange Server",
      "requiredAction": "Apply updates per vendor instructions.",
      "shortDescription": "Microsoft Exchange Server Privilege Escalation Vulnerability. This CVE ID is unique from CVE-2021-33768, CVE-2021-34470.",
      "vendorProject": "Microsoft",
      "vulnerabilityName": "Microsoft Exchange Server Privilege Escalation Vulnerability"
    },
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secure@microsoft.com",
        "ID": "CVE-2021-34523",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Microsoft Exchange Server 2013 Cumulative Update 23",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.00.0",
                          "version_value": "15.00.1497.015"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 9",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "15.02.0858.010"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 20",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "15.01.2242.008"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2016 Cumulative Update 19",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.01.0",
                          "version_value": "15.01.2176.012"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Microsoft Exchange Server 2019 Cumulative Update 8",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "15.02.0",
                          "version_value": "15.02.0792.013"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Microsoft"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Microsoft Exchange Server Elevation of Privilege Vulnerability"
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "baseScore": 9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Elevation of Privilege"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523",
            "refsource": "MISC",
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523"
          },
          {
            "name": "https://www.zerodayinitiative.com/advisories/ZDI-21-822/",
            "refsource": "MISC",
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-822/"
          },
          {
            "name": "http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html",
            "refsource": "MISC",
            "url": "http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "cisaActionDue": "2021-11-17",
        "cisaExploitAdd": "2021-11-03",
        "cisaRequiredAction": "Apply updates per vendor instructions.",
        "cisaVulnerabilityName": "Microsoft Exchange Server Privilege Escalation Vulnerability",
        "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",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*",
                    "matchCriteriaId": "19C1EE0C-B8DD-4B91-BE4B-1C42D72FB718",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*",
                    "matchCriteriaId": "44ECF39A-1DE1-4870-A494-06A53494338D",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*",
                    "matchCriteriaId": "71CDF29B-116B-4DE2-AFD0-B62477FF0AEB",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "Microsoft Exchange Server Elevation of Privilege Vulnerability"
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad de Elevaci\u00f3n de Privilegios de Microsoft Exchange Server. Este ID de CVE es diferente de CVE-2021-33768, CVE-2021-34470"
          }
        ],
        "id": "CVE-2021-34523",
        "lastModified": "2024-02-13T17:20:51.760",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 7.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 9.0,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.5,
              "impactScore": 5.8,
              "source": "secure@microsoft.com",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ]
        },
        "published": "2021-07-14T18:15:12.347",
        "references": [
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html"
          },
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523"
          },
          {
            "source": "secure@microsoft.com",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-822/"
          }
        ],
        "sourceIdentifier": "secure@microsoft.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-287"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    }
  }
}

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Microsoft Exchange Server ist das Serverprodukt f\u00fcr das Client-Server Groupware- und Nachrichtensystem der Firma Microsoft.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Microsoft Exchange Server 2013, Microsoft Exchange Server 2016 und Microsoft Exchange Server 2019 ausnutzen, um beliebigen Programmcode auszuf\u00fchren, um seine Privilegien zu erh\u00f6hen und um Informationen offenzulegen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2024-1897 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2024-1897.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-1897 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-1897"
      },
      {
        "category": "external",
        "summary": "Microsoft Leitfaden f\u00fcr Sicherheitsupdates vom 2021-07-13",
        "url": "https://msrc.microsoft.com/update-guide"
      },
      {
        "category": "external",
        "summary": "Rapid7 Blog vom 2021-08-12",
        "url": "https://www.rapid7.com/blog/post/2021/08/12/proxyshell-more-widespread-exploitation-of-microsoft-exchange-servers/"
      },
      {
        "category": "external",
        "summary": "The Hacker News vom 2021-08-30",
        "url": "https://thehackernews.com/2021/08/new-microsoft-exchange-proxytoken-flaw.html"
      },
      {
        "category": "external",
        "summary": "CISA Known Exploited Vulnerabilities Catalog vom 2024-08-21",
        "url": "https://www.cisa.gov/news-events/alerts/2024/08/21/cisa-adds-four-known-exploited-vulnerabilities-catalog"
      }
    ],
    "source_lang": "en-US",
    "title": "Microsoft Exchange Server: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2024-08-21T22:00:00.000+00:00",
      "generator": {
        "date": "2024-08-22T08:13:42.843+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.6"
        }
      },
      "id": "WID-SEC-W-2024-1897",
      "initial_release_date": "2021-07-13T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2021-07-13T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-08-08T22:00:00.000+00:00",
          "number": "2",
          "summary": "Schwachstellen auch bekannt als ProxyOracle bzw. ProxyShell"
        },
        {
          "date": "2021-08-12T22:00:00.000+00:00",
          "number": "3",
          "summary": "Aktive Ausnutzung von CVE-2021-34473 und CVE-2021-34523"
        },
        {
          "date": "2021-08-30T22:00:00.000+00:00",
          "number": "4",
          "summary": "Aktive Ausnutzung von CVE-2021-33766"
        },
        {
          "date": "2024-08-21T22:00:00.000+00:00",
          "number": "5",
          "summary": "Aktive Ausnutzung von CVE-2021-31196"
        }
      ],
      "status": "final",
      "version": "5"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "Cumulative Update 23",
                "product": {
                  "name": "Microsoft Exchange Server 2013 Cumulative Update 23",
                  "product_id": "T014545",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange_server_2013::cumulative_update_23"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Exchange Server 2013"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "Cumulative Update 20",
                "product": {
                  "name": "Microsoft Exchange Server 2016 Cumulative Update 20",
                  "product_id": "T018854",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange_server_2016:cumulative_update_20"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "Cumulative Update 19",
                "product": {
                  "name": "Microsoft Exchange Server 2016 Cumulative Update 19",
                  "product_id": "T019778",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange_server_2016:cumulative_update_19"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Exchange Server 2016"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "Cumulative Update 9",
                "product": {
                  "name": "Microsoft Exchange Server 2019 Cumulative Update 9",
                  "product_id": "T018855",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange_server_2019:cumulative_update_9"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "Cumulative Update 8",
                "product": {
                  "name": "Microsoft Exchange Server 2019 Cumulative Update 8",
                  "product_id": "T019779",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange_server_2019:cumulative_update_8"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Exchange Server 2019"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-31196",
      "notes": [
        {
          "category": "description",
          "text": "In Microsoft Exchange Server 2013, Microsoft Exchange Server 2016 und Microsoft Exchange Server 2019 existieren mehrere nicht n\u00e4her beschriebene Schwachstellen. Ein Angreifer kann dies ausnutzen, um beliebigen Code auszuf\u00fchren, um seine Privilegien zu erh\u00f6hen und um Informationen offenzulegen. Einige dieser Schwachstellen k\u00f6nnen von einem entfernten, anonymen Angreifer ausgenutzt werden. Die Ausnutzung einiger dieser Schwachstellen erfordert keine Nutzer-Interaktion."
        }
      ],
      "product_status": {
        "known_affected": [
          "T018854",
          "T019779",
          "T018855",
          "T019778",
          "T014545"
        ]
      },
      "release_date": "2021-07-13T22:00:00.000+00:00",
      "title": "CVE-2021-31196"
    },
    {
      "cve": "CVE-2021-31206",
      "notes": [
        {
          "category": "description",
          "text": "In Microsoft Exchange Server 2013, Microsoft Exchange Server 2016 und Microsoft Exchange Server 2019 existieren mehrere nicht n\u00e4her beschriebene Schwachstellen. Ein Angreifer kann dies ausnutzen, um beliebigen Code auszuf\u00fchren, um seine Privilegien zu erh\u00f6hen und um Informationen offenzulegen. Einige dieser Schwachstellen k\u00f6nnen von einem entfernten, anonymen Angreifer ausgenutzt werden. Die Ausnutzung einiger dieser Schwachstellen erfordert keine Nutzer-Interaktion."
        }
      ],
      "product_status": {
        "known_affected": [
          "T018854",
          "T019779",
          "T018855",
          "T019778",
          "T014545"
        ]
      },
      "release_date": "2021-07-13T22:00:00.000+00:00",
      "title": "CVE-2021-31206"
    },
    {
      "cve": "CVE-2021-33766",
      "notes": [
        {
          "category": "description",
          "text": "In Microsoft Exchange Server 2013, Microsoft Exchange Server 2016 und Microsoft Exchange Server 2019 existieren mehrere nicht n\u00e4her beschriebene Schwachstellen. Ein Angreifer kann dies ausnutzen, um beliebigen Code auszuf\u00fchren, um seine Privilegien zu erh\u00f6hen und um Informationen offenzulegen. Einige dieser Schwachstellen k\u00f6nnen von einem entfernten, anonymen Angreifer ausgenutzt werden. Die Ausnutzung einiger dieser Schwachstellen erfordert keine Nutzer-Interaktion."
        }
      ],
      "product_status": {
        "known_affected": [
          "T018854",
          "T019779",
          "T018855",
          "T019778",
          "T014545"
        ]
      },
      "release_date": "2021-07-13T22:00:00.000+00:00",
      "title": "CVE-2021-33766"
    },
    {
      "cve": "CVE-2021-33768",
      "notes": [
        {
          "category": "description",
          "text": "In Microsoft Exchange Server 2013, Microsoft Exchange Server 2016 und Microsoft Exchange Server 2019 existieren mehrere nicht n\u00e4her beschriebene Schwachstellen. Ein Angreifer kann dies ausnutzen, um beliebigen Code auszuf\u00fchren, um seine Privilegien zu erh\u00f6hen und um Informationen offenzulegen. Einige dieser Schwachstellen k\u00f6nnen von einem entfernten, anonymen Angreifer ausgenutzt werden. Die Ausnutzung einiger dieser Schwachstellen erfordert keine Nutzer-Interaktion."
        }
      ],
      "product_status": {
        "known_affected": [
          "T018854",
          "T019779",
          "T018855",
          "T019778",
          "T014545"
        ]
      },
      "release_date": "2021-07-13T22:00:00.000+00:00",
      "title": "CVE-2021-33768"
    },
    {
      "cve": "CVE-2021-34470",
      "notes": [
        {
          "category": "description",
          "text": "In Microsoft Exchange Server 2013, Microsoft Exchange Server 2016 und Microsoft Exchange Server 2019 existieren mehrere nicht n\u00e4her beschriebene Schwachstellen. Ein Angreifer kann dies ausnutzen, um beliebigen Code auszuf\u00fchren, um seine Privilegien zu erh\u00f6hen und um Informationen offenzulegen. Einige dieser Schwachstellen k\u00f6nnen von einem entfernten, anonymen Angreifer ausgenutzt werden. Die Ausnutzung einiger dieser Schwachstellen erfordert keine Nutzer-Interaktion."
        }
      ],
      "product_status": {
        "known_affected": [
          "T018854",
          "T019779",
          "T018855",
          "T019778",
          "T014545"
        ]
      },
      "release_date": "2021-07-13T22:00:00.000+00:00",
      "title": "CVE-2021-34470"
    },
    {
      "cve": "CVE-2021-34473",
      "notes": [
        {
          "category": "description",
          "text": "In Microsoft Exchange Server 2013, Microsoft Exchange Server 2016 und Microsoft Exchange Server 2019 existieren mehrere nicht n\u00e4her beschriebene Schwachstellen. Ein Angreifer kann dies ausnutzen, um beliebigen Code auszuf\u00fchren, um seine Privilegien zu erh\u00f6hen und um Informationen offenzulegen. Einige dieser Schwachstellen k\u00f6nnen von einem entfernten, anonymen Angreifer ausgenutzt werden. Die Ausnutzung einiger dieser Schwachstellen erfordert keine Nutzer-Interaktion."
        }
      ],
      "product_status": {
        "known_affected": [
          "T018854",
          "T019779",
          "T018855",
          "T019778",
          "T014545"
        ]
      },
      "release_date": "2021-07-13T22:00:00.000+00:00",
      "title": "CVE-2021-34473"
    },
    {
      "cve": "CVE-2021-34523",
      "notes": [
        {
          "category": "description",
          "text": "In Microsoft Exchange Server 2013, Microsoft Exchange Server 2016 und Microsoft Exchange Server 2019 existieren mehrere nicht n\u00e4her beschriebene Schwachstellen. Ein Angreifer kann dies ausnutzen, um beliebigen Code auszuf\u00fchren, um seine Privilegien zu erh\u00f6hen und um Informationen offenzulegen. Einige dieser Schwachstellen k\u00f6nnen von einem entfernten, anonymen Angreifer ausgenutzt werden. Die Ausnutzung einiger dieser Schwachstellen erfordert keine Nutzer-Interaktion."
        }
      ],
      "product_status": {
        "known_affected": [
          "T018854",
          "T019779",
          "T018855",
          "T019778",
          "T014545"
        ]
      },
      "release_date": "2021-07-13T22:00:00.000+00:00",
      "title": "CVE-2021-34523"
    }
  ]
}