WID-SEC-W-2026-2025

Vulnerability from csaf_certbund - Published: 2026-06-21 22:00 - Updated: 2026-07-21 22:00
Summary
libexpat: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff
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: Expat ist ein XML Parser, der in der Programmiersprache-C geschrieben ist.
Angriff: Ein lokaler Angreifer kann mehrere Schwachstellen in libexpat ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, darunter möglicherweise die Ausführung von beliebigem Code, die Manipulation von Daten, die Umgehung von Sicherheitsmaßnahmen, die Offenlegung vertraulicher Informationen oder die Herbeiführung eines Denial-of-Service-Zustands.
Betroffene Betriebssysteme: - Sonstiges - UNIX
CVE-2026-50219
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56403
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56404
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56405
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56406
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56407
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56408
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56409
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56410
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56411
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
CVE-2026-56412
Affected products
Product Identifier Version Remediation
IBM AIX 7.3
IBM / AIX
 cpe:/o:ibm:aix:7.3 7.3
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
 <V7.10.013
IBM VIOS 4.1
IBM / VIOS
 cpe:/a:ibm:vios:4.1 4.1
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source expat <2.8.2
Open Source / expat
 <2.8.2
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": "Expat ist ein XML Parser, der in der Programmiersprache-C geschrieben ist.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann mehrere Schwachstellen in libexpat ausnutzen, um einen nicht n\u00e4her spezifizierten Angriff durchzuf\u00fchren, darunter m\u00f6glicherweise die Ausf\u00fchrung von beliebigem Code, die Manipulation von Daten, die Umgehung von Sicherheitsma\u00dfnahmen, die Offenlegung vertraulicher Informationen oder die Herbeif\u00fchrung eines Denial-of-Service-Zustands.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges\n- UNIX",
        "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-2026-2025 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2025.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2025 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2025"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38180"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38181"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38182"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38183"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38184"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38185"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38186"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38187"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38188"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-21",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38189"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:30647 vom 2026-06-28",
        "url": "https://access.redhat.com/errata/RHSA-2026:30647"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 7280109 vom 2026-07-15",
        "url": "https://www.ibm.com/support/pages/node/7280109"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 7280108 vom 2026-07-15",
        "url": "https://www.ibm.com/support/pages/node/7280108"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 7280107 vom 2026-07-15",
        "url": "https://www.ibm.com/support/pages/node/7280107"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 7280106 vom 2026-07-15",
        "url": "https://www.ibm.com/support/pages/node/7280106"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2-2026-3800 vom 2026-07-21",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3800.html"
      },
      {
        "category": "external",
        "summary": "Meinberg Security Advisory MBGSA-2026.05 vom 2026-07-21",
        "url": "http://news.meinberg.de/680/"
      }
    ],
    "source_lang": "en-US",
    "title": "libexpat: Mehrere Schwachstellen erm\u00f6glichen nicht spezifizierten Angriff",
    "tracking": {
      "current_release_date": "2026-07-21T22:00:00.000+00:00",
      "generator": {
        "date": "2026-07-22T09:18:52.978+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2025",
      "initial_release_date": "2026-06-21T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-06-21T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-06-28T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2026-07-14T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von IBM aufgenommen"
        },
        {
          "date": "2026-07-15T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von IBM aufgenommen"
        },
        {
          "date": "2026-07-21T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Amazon und Meinberg aufgenommen"
        }
      ],
      "status": "final",
      "version": "5"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "398363",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "7.3",
                "product": {
                  "name": "IBM AIX 7.3",
                  "product_id": "1139691",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:ibm:aix:7.3"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "AIX"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "4.1",
                "product": {
                  "name": "IBM VIOS 4.1",
                  "product_id": "1522854",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ibm:vios:4.1"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "VIOS"
          }
        ],
        "category": "vendor",
        "name": "IBM"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003cV7.10.013",
                "product": {
                  "name": "Meinberg LANTIME \u003cV7.10.013",
                  "product_id": "T056848"
                }
              },
              {
                "category": "product_version",
                "name": "V7.10.013",
                "product": {
                  "name": "Meinberg LANTIME V7.10.013",
                  "product_id": "T056848-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:meinberg:lantime:v7.10.013"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "LANTIME"
          }
        ],
        "category": "vendor",
        "name": "Meinberg"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c2.8.2",
                "product": {
                  "name": "Open Source expat \u003c2.8.2",
                  "product_id": "T055656"
                }
              },
              {
                "category": "product_version",
                "name": "2.8.2",
                "product": {
                  "name": "Open Source expat 2.8.2",
                  "product_id": "T055656-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:expat:expat:2.8.2"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "expat"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Red Hat Enterprise Linux",
            "product": {
              "name": "Red Hat Enterprise Linux",
              "product_id": "67646",
              "product_identification_helper": {
                "cpe": "cpe:/o:redhat:enterprise_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-50219",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-50219"
    },
    {
      "cve": "CVE-2026-56403",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56403"
    },
    {
      "cve": "CVE-2026-56404",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56404"
    },
    {
      "cve": "CVE-2026-56405",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56405"
    },
    {
      "cve": "CVE-2026-56406",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56406"
    },
    {
      "cve": "CVE-2026-56407",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56407"
    },
    {
      "cve": "CVE-2026-56408",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56408"
    },
    {
      "cve": "CVE-2026-56409",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56409"
    },
    {
      "cve": "CVE-2026-56410",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56410"
    },
    {
      "cve": "CVE-2026-56411",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56411"
    },
    {
      "cve": "CVE-2026-56412",
      "product_status": {
        "known_affected": [
          "1139691",
          "67646",
          "T056848",
          "1522854",
          "398363",
          "T055656"
        ]
      },
      "release_date": "2026-06-21T22:00:00.000+00:00",
      "title": "CVE-2026-56412"
    }
  ]
}



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.