WID-SEC-W-2026-2664

Vulnerability from csaf_certbund - Published: 2026-08-05 22:00 - Updated: 2026-08-05 22:00
Summary
Cisco IOS: Schwachstelle ermöglicht Denial of Service
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: Cisco Internetwork Operating System (IOS) ist ein Betriebssystem, das für Cisco Geräte wie z. B. Router und Switches eingesetzt wird.
Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco IOS und Cisco IOS XE ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - CISCO Appliance
CVE-2026-20301
Affected products
Product Identifier Version Remediation
Cisco IOS
Cisco
 cpe:/o:cisco:ios:- —
Cisco IOS XE
Cisco
 cpe:/o:cisco:ios_xe:- —
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": "Cisco Internetwork Operating System (IOS) ist ein Betriebssystem, das f\u00fcr Cisco Ger\u00e4te wie z. B. Router und Switches eingesetzt wird.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco IOS und Cisco IOS XE ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- CISCO Appliance",
        "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-2026-2664 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2664.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2664 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2664"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory cisco-sa-ios-xmcp-thbAr34t vom 2026-08-05",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xmcp-thbAr34t"
      }
    ],
    "source_lang": "en-US",
    "title": "Cisco IOS: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2026-08-05T22:00:00.000+00:00",
      "generator": {
        "date": "2026-08-06T11:46:12.023+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2664",
      "initial_release_date": "2026-08-05T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-08-05T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Cisco IOS",
            "product": {
              "name": "Cisco IOS",
              "product_id": "T057565",
              "product_identification_helper": {
                "cpe": "cpe:/o:cisco:ios:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Cisco IOS XE",
            "product": {
              "name": "Cisco IOS XE",
              "product_id": "T057566",
              "product_identification_helper": {
                "cpe": "cpe:/o:cisco:ios_xe:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20301",
      "product_status": {
        "known_affected": [
          "T057565",
          "T057566"
        ]
      },
      "release_date": "2026-08-05T22:00:00.000+00:00",
      "title": "CVE-2026-20301"
    }
  ]
}



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