WID-SEC-W-2026-3511

Vulnerability from csaf_certbund - Published: 2026-09-22 22:00 - Updated: 2026-09-22 22:00
Summary
Ubiquiti UniFi Gateways: Mehrere Schwachstellen ermöglichen Denial of Service
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: UniFi ist Ubiquiti's End-to-End-Netzwerk-Ökosystem für Unternehmen und Smart Homes.
Angriff: Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Ubiquiti UniFi Gateways ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - Sonstiges
CVE-2026-77544
Affected products
Product Identifier Version Remediation
Ubiquiti UniFi Gateways <5.1.26
Ubiquiti / UniFi
 Gateways <5.1.26
CVE-2026-77555
Affected products
Known affected 1 product, the same list as for CVE-2026-77544
CVE-2026-77556
Affected products
Known affected 1 product, the same list as for CVE-2026-77544
CVE-2026-77558
Affected products
Known affected 1 product, the same list as for CVE-2026-77544
CVE-2026-95861
Affected products
Known affected 1 product, the same list as for CVE-2026-77544
CVE-2026-95862
Affected products
Known affected 1 product, the same list as for CVE-2026-77544
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": "UniFi ist Ubiquiti\u0027s End-to-End-Netzwerk-\u00d6kosystem f\u00fcr Unternehmen und Smart Homes.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Ubiquiti UniFi Gateways ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges",
        "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-2026-3511 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3511.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-3511 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3511"
      },
      {
        "category": "external",
        "summary": "Ubiquity Security Advisory Bulletin vom 2026-09-22",
        "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-069-069/07e367a7-edec-4d85-a058-f97e5ce9ac9c"
      }
    ],
    "source_lang": "en-US",
    "title": "Ubiquiti UniFi Gateways: Mehrere Schwachstellen erm\u00f6glichen Denial of Service",
    "tracking": {
      "current_release_date": "2026-09-22T22:00:00.000+00:00",
      "generator": {
        "date": "2026-09-23T11:24:29.296+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-3511",
      "initial_release_date": "2026-09-22T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-09-22T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "Gateways \u003c5.1.26",
                "product": {
                  "name": "Ubiquiti UniFi Gateways \u003c5.1.26",
                  "product_id": "T059989"
                }
              },
              {
                "category": "product_version",
                "name": "Gateways 5.1.26",
                "product": {
                  "name": "Ubiquiti UniFi Gateways 5.1.26",
                  "product_id": "T059989-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ubnt:unifi:gateways__5.1.26"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "UniFi"
          }
        ],
        "category": "vendor",
        "name": "Ubiquiti"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-77544",
      "product_status": {
        "known_affected": [
          "T059989"
        ]
      },
      "release_date": "2026-09-22T22:00:00.000+00:00",
      "title": "CVE-2026-77544"
    },
    {
      "cve": "CVE-2026-77555",
      "product_status": {
        "known_affected": [
          "T059989"
        ]
      },
      "release_date": "2026-09-22T22:00:00.000+00:00",
      "title": "CVE-2026-77555"
    },
    {
      "cve": "CVE-2026-77556",
      "product_status": {
        "known_affected": [
          "T059989"
        ]
      },
      "release_date": "2026-09-22T22:00:00.000+00:00",
      "title": "CVE-2026-77556"
    },
    {
      "cve": "CVE-2026-77558",
      "product_status": {
        "known_affected": [
          "T059989"
        ]
      },
      "release_date": "2026-09-22T22:00:00.000+00:00",
      "title": "CVE-2026-77558"
    },
    {
      "cve": "CVE-2026-95861",
      "product_status": {
        "known_affected": [
          "T059989"
        ]
      },
      "release_date": "2026-09-22T22:00:00.000+00:00",
      "title": "CVE-2026-95861"
    },
    {
      "cve": "CVE-2026-95862",
      "product_status": {
        "known_affected": [
          "T059989"
        ]
      },
      "release_date": "2026-09-22T22:00:00.000+00:00",
      "title": "CVE-2026-95862"
    }
  ]
}



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.



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.