WID-SEC-W-2026-2784

Vulnerability from csaf_certbund - Published: 2026-08-11 22:00 - Updated: 2026-08-31 22:00
Summary
Microsoft Exchange Server: Mehrere Schwachstellen
Severity
Hoch
Notes
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.
Produktbeschreibung: Exchange ist ein Groupware und Nachrichtensystem der Firma Microsoft.
Angriff: Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Microsoft Exchange ausnutzen, um erweiterte Rechte – einschließlich SYSTEM-Rechte – zu erlangen, Sicherheitsmaßnahmen zu umgehen, beliebigen Code auszuführen, Daten zu manipulieren oder offenzulegen, Spoofing-Angriffe durchzuführen und einen Denial-of-Service-Zustand auszulösen.
Betroffene Betriebssysteme: - Windows
CVE-2026-62910
Affected products
Product Identifier Version Remediation
Microsoft Exchange Server 2016 Cumulative Update 23
Microsoft / Exchange
 cpe:/a:microsoft:exchange:server_2016_cumulative_update_23 Server 2016 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 14
Microsoft / Exchange
 cpe:/a:microsoft:exchange:server_2019_cumulative_update_14 Server 2019 Cumulative Update 14
Microsoft Exchange Server Subscription Edition RTM
Microsoft / Exchange
 cpe:/a:microsoft:exchange:server_subscription_edition_rtm Server Subscription Edition RTM
CVE-2026-62911
Affected products
Known affected 3 products, the same list as for CVE-2026-62910
CVE-2026-62912
Affected products
Known affected 3 products, the same list as for CVE-2026-62910
CVE-2026-62913
Affected products
Known affected 3 products, the same list as for CVE-2026-62910
CVE-2026-62914
Affected products
Known affected 3 products, the same list as for CVE-2026-62910
CVE-2026-62915
Affected products
Known affected 3 products, the same list as for CVE-2026-62910
CVE-2026-65813
Affected products
Known affected 3 products, the same list as for CVE-2026-62910
References
To clipboard 

{
  "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": "Exchange ist ein Groupware und Nachrichtensystem der Firma Microsoft.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Microsoft Exchange ausnutzen, um erweiterte Rechte \u2013 einschlie\u00dflich SYSTEM-Rechte \u2013 zu erlangen, Sicherheitsma\u00dfnahmen zu umgehen, beliebigen Code auszuf\u00fchren, Daten zu manipulieren oder offenzulegen, Spoofing-Angriffe durchzuf\u00fchren und einen Denial-of-Service-Zustand auszul\u00f6sen.",
        "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-2026-2784 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2784.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2784 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2784"
      },
      {
        "category": "external",
        "summary": "Microsoft Leitfaden f\u00fcr Sicherheitsupdates",
        "url": "https://msrc.microsoft.com/update-guide/"
      },
      {
        "category": "external",
        "summary": "Microsoft Security Advisory CVE-2026-62912",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62912"
      },
      {
        "category": "external",
        "summary": "Microsoft Security Advisory CVE-2026-62910",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62910"
      },
      {
        "category": "external",
        "summary": "Microsoft Security Advisory CVE-2026-62914",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62914"
      },
      {
        "category": "external",
        "summary": "Microsoft Security Advisory CVE-2026-62915",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62915"
      },
      {
        "category": "external",
        "summary": "Microsoft Security Advisory CVE-2026-62911",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62911"
      },
      {
        "category": "external",
        "summary": "Microsoft Security Advisory CVE-2026-65813",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65813"
      },
      {
        "category": "external",
        "summary": "Microsoft Security Advisory CVE-2026-62913",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62913"
      },
      {
        "category": "external",
        "summary": "PoC CVE-2026-62911",
        "url": "https://github.com/hypnguyen1209/CVE-2026-62911"
      }
    ],
    "source_lang": "en-US",
    "title": "Microsoft Exchange Server: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-08-31T22:00:00.000+00:00",
      "generator": {
        "date": "2026-09-01T11:11:29.684+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2784",
      "initial_release_date": "2026-08-11T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-08-11T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-08-31T22:00:00.000+00:00",
          "number": "2",
          "summary": "PoC aufgenommen CVE-2026-62911"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "Server 2016 Cumulative Update 23",
                "product": {
                  "name": "Microsoft Exchange Server 2016 Cumulative Update 23",
                  "product_id": "T057921",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange:server_2016_cumulative_update_23"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "Server 2019 Cumulative Update 14",
                "product": {
                  "name": "Microsoft Exchange Server 2019 Cumulative Update 14",
                  "product_id": "T057922",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange:server_2019_cumulative_update_14"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "Server Subscription Edition RTM",
                "product": {
                  "name": "Microsoft Exchange Server Subscription Edition RTM",
                  "product_id": "T057923",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:microsoft:exchange:server_subscription_edition_rtm"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Exchange"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-62910",
      "product_status": {
        "known_affected": [
          "T057921",
          "T057922",
          "T057923"
        ]
      },
      "release_date": "2026-08-11T22:00:00.000+00:00",
      "title": "CVE-2026-62910"
    },
    {
      "cve": "CVE-2026-62911",
      "product_status": {
        "known_affected": [
          "T057921",
          "T057922",
          "T057923"
        ]
      },
      "release_date": "2026-08-11T22:00:00.000+00:00",
      "title": "CVE-2026-62911"
    },
    {
      "cve": "CVE-2026-62912",
      "product_status": {
        "known_affected": [
          "T057921",
          "T057922",
          "T057923"
        ]
      },
      "release_date": "2026-08-11T22:00:00.000+00:00",
      "title": "CVE-2026-62912"
    },
    {
      "cve": "CVE-2026-62913",
      "product_status": {
        "known_affected": [
          "T057921",
          "T057922",
          "T057923"
        ]
      },
      "release_date": "2026-08-11T22:00:00.000+00:00",
      "title": "CVE-2026-62913"
    },
    {
      "cve": "CVE-2026-62914",
      "product_status": {
        "known_affected": [
          "T057921",
          "T057922",
          "T057923"
        ]
      },
      "release_date": "2026-08-11T22:00:00.000+00:00",
      "title": "CVE-2026-62914"
    },
    {
      "cve": "CVE-2026-62915",
      "product_status": {
        "known_affected": [
          "T057921",
          "T057922",
          "T057923"
        ]
      },
      "release_date": "2026-08-11T22:00:00.000+00:00",
      "title": "CVE-2026-62915"
    },
    {
      "cve": "CVE-2026-65813",
      "product_status": {
        "known_affected": [
          "T057921",
          "T057922",
          "T057923"
        ]
      },
      "release_date": "2026-08-11T22:00:00.000+00:00",
      "title": "CVE-2026-65813"
    }
  ]
}



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Sightings

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Nomenclature

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.