WID-SEC-W-2026-1503

Vulnerability from csaf_certbund - Published: 2026-05-12 22:00 - Updated: 2026-05-20 22:00
Summary
Mozilla Firefox: 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: Firefox ist ein Open Source Web Browser.
Angriff: Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Firefox ausnutzen, um nicht näher spezifizierte Angriffe durchzuführen, darunter möglicherweise die Ausführung von Code, die Umgehung von Sicherheitsmaßnahmen, die Offenlegung oder Manipulation von Daten oder die Herbeiführung von Denial-of-Service-Zuständen.
Betroffene Betriebssysteme: - Sonstiges - UNIX - Windows
CVE-2026-8388
Affected products
Product Identifier Version Remediation
Mozilla Firefox <150.0.3
Mozilla / Firefox
 <150.0.3
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
SUSE openSUSE
SUSE
 cpe:/o:suse:opensuse:- —
CVE-2026-8389
Affected products
Product Identifier Version Remediation
Mozilla Firefox <150.0.3
Mozilla / Firefox
 <150.0.3
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
SUSE openSUSE
SUSE
 cpe:/o:suse:opensuse:- —
CVE-2026-8390
Affected products
Product Identifier Version Remediation
Mozilla Firefox <150.0.3
Mozilla / Firefox
 <150.0.3
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
SUSE openSUSE
SUSE
 cpe:/o:suse:opensuse:- —
CVE-2026-8391
Affected products
Product Identifier Version Remediation
Mozilla Firefox <150.0.3
Mozilla / Firefox
 <150.0.3
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
SUSE openSUSE
SUSE
 cpe:/o:suse:opensuse:- —
CVE-2026-8401
Affected products
Product Identifier Version Remediation
Mozilla Firefox <150.0.3
Mozilla / Firefox
 <150.0.3
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
SUSE openSUSE
SUSE
 cpe:/o:suse:opensuse:- —
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": "Firefox ist ein Open Source Web Browser.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Firefox ausnutzen, um nicht n\u00e4her spezifizierte Angriffe durchzuf\u00fchren, darunter m\u00f6glicherweise die Ausf\u00fchrung von Code, die Umgehung von Sicherheitsma\u00dfnahmen, die Offenlegung oder Manipulation von Daten oder die Herbeif\u00fchrung von Denial-of-Service-Zust\u00e4nden.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges\n- UNIX\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-2026-1503 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1503.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1503 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1503"
      },
      {
        "category": "external",
        "summary": "Mozilla Security Advisory mfsa2026-45 vom 2026-05-12",
        "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-45/"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:10813-1 vom 2026-05-20",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/N4PBMNGPCFVXRJKTYWURGMAHKO2FKQDE/"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-4592 vom 2026-05-20",
        "url": "https://lists.debian.org/debian-lts-announce/2026/05/msg00037.html"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-6283 vom 2026-05-20",
        "url": "https://lists.debian.org/debian-security-announce/2026/msg00194.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Mozilla Firefox: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-05-20T22:00:00.000+00:00",
      "generator": {
        "date": "2026-05-21T07:58:05.596+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1503",
      "initial_release_date": "2026-05-12T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-05-12T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-05-20T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von openSUSE und Debian aufgenommen"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c150.0.3",
                "product": {
                  "name": "Mozilla Firefox \u003c150.0.3",
                  "product_id": "T053949"
                }
              },
              {
                "category": "product_version",
                "name": "150.0.3",
                "product": {
                  "name": "Mozilla Firefox 150.0.3",
                  "product_id": "T053949-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:mozilla:firefox:150.0.3"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Firefox"
          }
        ],
        "category": "vendor",
        "name": "Mozilla"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE openSUSE",
            "product": {
              "name": "SUSE openSUSE",
              "product_id": "T027843",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:opensuse:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-8388",
      "product_status": {
        "known_affected": [
          "T053949",
          "2951",
          "T027843"
        ]
      },
      "release_date": "2026-05-12T22:00:00.000+00:00",
      "title": "CVE-2026-8388"
    },
    {
      "cve": "CVE-2026-8389",
      "product_status": {
        "known_affected": [
          "T053949",
          "2951",
          "T027843"
        ]
      },
      "release_date": "2026-05-12T22:00:00.000+00:00",
      "title": "CVE-2026-8389"
    },
    {
      "cve": "CVE-2026-8390",
      "product_status": {
        "known_affected": [
          "T053949",
          "2951",
          "T027843"
        ]
      },
      "release_date": "2026-05-12T22:00:00.000+00:00",
      "title": "CVE-2026-8390"
    },
    {
      "cve": "CVE-2026-8391",
      "product_status": {
        "known_affected": [
          "T053949",
          "2951",
          "T027843"
        ]
      },
      "release_date": "2026-05-12T22:00:00.000+00:00",
      "title": "CVE-2026-8391"
    },
    {
      "cve": "CVE-2026-8401",
      "product_status": {
        "known_affected": [
          "T053949",
          "2951",
          "T027843"
        ]
      },
      "release_date": "2026-05-12T22:00:00.000+00:00",
      "title": "CVE-2026-8401"
    }
  ]
}


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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.