{
  "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 für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen."
    }, {
      "category" : "description",
      "text" : "Excel ist ein Tabellenkalkulationsprogramm der Microsoft Office Suite und ist sowohl für Microsoft Windows als auch für Mac OS verfügbar.\r\nMicrosoft Word ist ein Textverarbeitungsprogramm der Firma Microsoft für die Windows-Betriebssysteme und Mac OS.\r\nOutlook ist ein Personal Information Manager von Microsoft und ist Bestandteil der Office Suite.\r\nMicrosoft Office Online Server ist ein Serverprodukt, das browserbasierte Versionen von Word, PowerPoint, Excel und OneNote bereitstellt. \r\nMicrosoft Sharepoint Services ist ein Portalsystem für die zentrale Verwaltung von Dokumenten und Anwendungen. Die Inhalte werden u.a. über Webseiten zur Verfügung gestellt.\r\nDie Microsoft Office Suite beinhaltet zahlreiche Büroanwendungen wie Textverarbeitung, Tabellenkalkulation, Datenbank und weitere Applikationen.\r\nMicrosoft Sharepoint ist ein Portalsystem für die zentrale Verwaltung von Dokumenten und Anwendungen. Die Inhalte werden u. a. über Webseiten zur Verfügung gestellt.\r\nMicrosoft 365 Apps ist eine Office Suite für zahlreiche Büroanwendungen.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein Angreifer kann mehrere Schwachstellen in Microsoft Excel, Microsoft Word, Microsoft Outlook, Microsoft Office Online Server, Microsoft SharePoint, Microsoft Office, Microsoft SharePoint Server 2019 und Microsoft 365 Apps ausnutzen, um Administratorrechte zu erlangen, Spoofing-Angriffe durchzuführen, Sicherheitsmaßnahmen zu umgehen und vertrauliche Informationen offenzulegen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- Windows",
      "title" : "Betroffene Betriebssysteme"
    } ],
    "publisher" : {
      "category" : "other",
      "contact_details" : "csaf-provider@cert-bund.de",
      "name" : "Bundesamt für Sicherheit in der Informationstechnik",
      "namespace" : "https://www.bsi.bund.de"
    },
    "references" : [ {
      "category" : "self",
      "summary" : "WID-SEC-W-2026-0371 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0371.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2026-0371 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0371"
    }, {
      "category" : "external",
      "summary" : "Microsoft Leitfaden für Sicherheitsupdates",
      "url" : "https://msrc.microsoft.com/update-guide/"
    } ],
    "source_lang" : "en-US",
    "title" : "Microsoft Office: Mehrere Schwachstellen",
    "tracking" : {
      "current_release_date" : "2026-02-10T23:00:00.000+00:00",
      "generator" : {
        "date" : "2026-02-11T09:42:32.084+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.5.0"
        }
      },
      "id" : "WID-SEC-W-2026-0371",
      "initial_release_date" : "2026-02-10T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2026-02-10T23:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      } ],
      "status" : "final",
      "version" : "1"
    }
  },
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    "branches" : [ {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Microsoft 365 Apps",
        "product" : {
          "name" : "Microsoft 365 Apps",
          "product_id" : "T050753",
          "product_identification_helper" : {
            "cpe" : "cpe:/a:microsoft:365_apps:-"
          }
        }
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "2016",
          "product" : {
            "name" : "Microsoft Excel 2016",
            "product_id" : "T050746",
            "product_identification_helper" : {
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          "name" : "LTSC for Mac 2021",
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          "name" : "LTSC 2024",
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          "name" : "LTSC for Mac 2024",
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            "product_identification_helper" : {
              "cpe" : "cpe:/a:microsoft:office:ltsc_for_mac_2024"
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        "category" : "product_name",
        "name" : "Office"
      }, {
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        "name" : "Microsoft Office Online Server",
        "product" : {
          "name" : "Microsoft Office Online Server",
          "product_id" : "T050749",
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        "name" : "Outlook"
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          "category" : "product_version",
          "name" : "Enterprise Server 2016",
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          "name" : "Server Subscription Edition",
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        "category" : "product_name",
        "name" : "Word"
      } ],
      "category" : "vendor",
      "name" : "Microsoft"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2026-21258",
    "product_status" : {
      "known_affected" : [ "T050752", "T050751", "T050754", "T050753", "T050750", "T050749", "T050748", "T050756", "T050755", "T050747", "T050758", "T050746", "T050757" ]
    },
    "release_date" : "2026-02-10T23:00:00.000+00:00",
    "title" : "CVE-2026-21258"
  }, {
    "cve" : "CVE-2026-21259",
    "product_status" : {
      "known_affected" : [ "T050752", "T050751", "T050754", "T050753", "T050750", "T050749", "T050748", "T050756", "T050755", "T050747", "T050758", "T050746", "T050757" ]
    },
    "release_date" : "2026-02-10T23:00:00.000+00:00",
    "title" : "CVE-2026-21259"
  }, {
    "cve" : "CVE-2026-21260",
    "product_status" : {
      "known_affected" : [ "T050752", "T050751", "T050754", "T050753", "T050750", "T050749", "T050748", "T050756", "T050755", "T050747", "T050758", "T050746", "T050757" ]
    },
    "release_date" : "2026-02-10T23:00:00.000+00:00",
    "title" : "CVE-2026-21260"
  }, {
    "cve" : "CVE-2026-21261",
    "product_status" : {
      "known_affected" : [ "T050752", "T050751", "T050754", "T050753", "T050750", "T050749", "T050748", "T050756", "T050755", "T050747", "T050758", "T050746", "T050757" ]
    },
    "release_date" : "2026-02-10T23:00:00.000+00:00",
    "title" : "CVE-2026-21261"
  }, {
    "cve" : "CVE-2026-21511",
    "product_status" : {
      "known_affected" : [ "T050752", "T050751", "T050754", "T050753", "T050750", "T050749", "T050748", "T050756", "T050755", "T050747", "T050758", "T050746", "T050757" ]
    },
    "release_date" : "2026-02-10T23:00:00.000+00:00",
    "title" : "CVE-2026-21511"
  }, {
    "cve" : "CVE-2026-21514",
    "product_status" : {
      "known_affected" : [ "T050752", "T050751", "T050754", "T050753", "T050750", "T050749", "T050748", "T050756", "T050755", "T050747", "T050758", "T050746", "T050757" ]
    },
    "release_date" : "2026-02-10T23:00:00.000+00:00",
    "title" : "CVE-2026-21514"
  } ]
}