WID-SEC-W-2026-1361

Vulnerability from csaf_certbund - Published: 2026-05-04 22:00 - Updated: 2026-05-04 22:00
Summary
Meta WhatsApp: Mehrere Schwachstellen
Severity
Mittel
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: Meta WhatsApp ist eine weit verbreitete Messaging-Anwendung, die Text-, Sprach- und Videoanrufe sowie Dateifreigabe über das Internet ermöglicht.
Angriff: Ein Angreifer kann mehrere Schwachstellen in Meta WhatsApp ausnutzen, um falsche Informationen darzustellen oder vertrauliche Informationen offenzulegen.
Betroffene Betriebssysteme: - Android - iPhoneOS - Windows
CVE-2026-23863
Affected products
Product Identifier Version Remediation
Meta WhatsApp Windows <2.3000.1032164386.258709
Meta / WhatsApp
 Windows <2.3000.1032164386.258709
CVE-2026-23866
Affected products
Product Identifier Version Remediation
Meta WhatsApp iOS <=2.26.15.72
Meta / WhatsApp
 iOS <=2.26.15.72
Meta WhatsApp Android <=2.26.7.10
Meta / WhatsApp
 Android <=2.26.7.10
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "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": "Meta WhatsApp ist eine weit verbreitete Messaging-Anwendung, die Text-, Sprach- und Videoanrufe sowie Dateifreigabe \u00fcber das Internet erm\u00f6glicht.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in Meta WhatsApp ausnutzen, um falsche Informationen darzustellen oder vertrauliche Informationen offenzulegen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Android\n- iPhoneOS\n- 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-2026-1361 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1361.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1361 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1361"
      },
      {
        "category": "external",
        "summary": "WhatsApp Security Advisories vom 2026-05-04",
        "url": "https://www.whatsapp.com/security/advisories/2026/"
      }
    ],
    "source_lang": "en-US",
    "title": "Meta WhatsApp: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-05-04T22:00:00.000+00:00",
      "generator": {
        "date": "2026-05-05T11:06:09.860+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.5.0"
        }
      },
      "id": "WID-SEC-W-2026-1361",
      "initial_release_date": "2026-05-04T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-05-04T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "Windows \u003c2.3000.1032164386.258709",
                "product": {
                  "name": "Meta WhatsApp Windows \u003c2.3000.1032164386.258709",
                  "product_id": "T053537"
                }
              },
              {
                "category": "product_version",
                "name": "Windows 2.3000.1032164386.258709",
                "product": {
                  "name": "Meta WhatsApp Windows 2.3000.1032164386.258709",
                  "product_id": "T053537-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:whatsapp:whatsapp:windows__2.3000.1032164386.258709"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "Android \u003c=2.26.7.10",
                "product": {
                  "name": "Meta WhatsApp Android \u003c=2.26.7.10",
                  "product_id": "T053542"
                }
              },
              {
                "category": "product_version_range",
                "name": "Android \u003c=2.26.7.10",
                "product": {
                  "name": "Meta WhatsApp Android \u003c=2.26.7.10",
                  "product_id": "T053542-fixed"
                }
              },
              {
                "category": "product_version_range",
                "name": "iOS \u003c=2.26.15.72",
                "product": {
                  "name": "Meta WhatsApp iOS \u003c=2.26.15.72",
                  "product_id": "T053543"
                }
              },
              {
                "category": "product_version_range",
                "name": "iOS \u003c= 2.26.15.72",
                "product": {
                  "name": "Meta WhatsApp iOS \u003c= 2.26.15.72",
                  "product_id": "T053543-fixed"
                }
              }
            ],
            "category": "product_name",
            "name": "WhatsApp"
          }
        ],
        "category": "vendor",
        "name": "Meta"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-23863",
      "product_status": {
        "known_affected": [
          "T053537"
        ]
      },
      "release_date": "2026-05-04T22:00:00.000+00:00",
      "title": "CVE-2026-23863"
    },
    {
      "cve": "CVE-2026-23866",
      "product_status": {
        "last_affected": [
          "T053543",
          "T053542"
        ]
      },
      "release_date": "2026-05-04T22:00:00.000+00:00",
      "title": "CVE-2026-23866"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.