WID-SEC-W-2026-1984

Vulnerability from csaf_certbund - Published: 2026-06-16 22:00 - Updated: 2026-06-16 22:00
Summary
OpenBSD: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
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: OpenBSD ist ein Unix-artiges Betriebssystem, abgeleitet von BSD-Unix.
Angriff: Ein Angreifer aus einem angrenzenden Netzwerk kann eine Schwachstelle in OpenBSD ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
Betroffene Betriebssysteme: - UNIX
Affected products
Product Identifier Version Remediation
OpenBSD OpenBSD commit <76e2b1c1fc4ac0883a72d3544131ad5cee7adf8
OpenBSD / OpenBSD
commit <76e2b1c1fc4ac0883a72d3544131ad5cee7adf8
Product Identifier Version Remediation
OpenBSD OpenBSD <=7.6
OpenBSD / OpenBSD
<=7.6

{
  "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": "OpenBSD ist ein Unix-artiges Betriebssystem, abgeleitet von BSD-Unix.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer aus einem angrenzenden Netzwerk kann eine Schwachstelle in OpenBSD ausnutzen, um Sicherheitsvorkehrungen zu umgehen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- 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-2026-1984 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1984.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1984 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1984"
      },
      {
        "category": "external",
        "summary": "Openwall Security Advisory vom 2026-06-16",
        "url": "https://www.openwall.com/lists/oss-security/2026/06/16/9"
      },
      {
        "category": "external",
        "summary": "EUVD Security Advisory EUVD-2026-37521 vom 2026-06-16",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-37521"
      },
      {
        "category": "external",
        "summary": "Argus Blog PoC vom 2026-06-16",
        "url": "https://blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.html"
      }
    ],
    "source_lang": "en-US",
    "title": "OpenBSD: Schwachstelle erm\u00f6glicht Umgehen von Sicherheitsvorkehrungen",
    "tracking": {
      "current_release_date": "2026-06-16T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-17T11:29:53.518+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1984",
      "initial_release_date": "2026-06-16T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-06-16T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=7.6",
                "product": {
                  "name": "OpenBSD OpenBSD \u003c=7.6",
                  "product_id": "T055564"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c=7.6",
                "product": {
                  "name": "OpenBSD OpenBSD \u003c=7.6",
                  "product_id": "T055564-fixed"
                }
              },
              {
                "category": "product_version_range",
                "name": "commit \u003c76e2b1c1fc4ac0883a72d3544131ad5cee7adf8",
                "product": {
                  "name": "OpenBSD OpenBSD commit \u003c76e2b1c1fc4ac0883a72d3544131ad5cee7adf8",
                  "product_id": "T055565"
                }
              },
              {
                "category": "product_version",
                "name": "commit 76e2b1c1fc4ac0883a72d3544131ad5cee7adf8",
                "product": {
                  "name": "OpenBSD OpenBSD commit 76e2b1c1fc4ac0883a72d3544131ad5cee7adf8",
                  "product_id": "T055565-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:openbsd:openbsd:commit__76e2b1c1fc4ac0883a72d3544131ad5cee7adf8"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "OpenBSD"
          }
        ],
        "category": "vendor",
        "name": "OpenBSD"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-55706",
      "product_status": {
        "known_affected": [
          "T055565"
        ],
        "last_affected": [
          "T055564"
        ]
      },
      "release_date": "2026-06-16T22:00:00.000+00:00",
      "title": "CVE-2026-55706"
    }
  ]
}


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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

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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.

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