WID-SEC-W-2026-0523

Vulnerability from csaf_certbund - Published: 2026-02-25 23:00 - Updated: 2026-02-25 23:00
Summary
Cisco Nexus: 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: Bei der Cisco Nexus Serie handelt es sich um modulare Switching-Systeme der Data Center-Klasse.
Angriff: Ein Angreifer kann mehrere Schwachstellen in Cisco Nexus ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - CISCO Appliance
CVE-2026-20033
Affected products
Product Identifier Version Remediation
Cisco Nexus 9000 Series Fabric Switches
Cisco / Nexus
 cpe:/h:cisco:nexus:9000_series_fabric_switches 9000 Series Fabric Switches
CVE-2026-20048
Affected products
Product Identifier Version Remediation
Cisco Nexus 9000 Series Fabric Switches
Cisco / Nexus
 cpe:/h:cisco:nexus:9000_series_fabric_switches 9000 Series Fabric Switches
CVE-2026-20051
Affected products
Product Identifier Version Remediation
Cisco Nexus 9500-R Series Switching Platform
Cisco / Nexus
 cpe:/h:cisco:nexus:9500-r_series_switching_platform 9500-R Series Switching Platform
Cisco Nexus 3600 Series Switching Platform
Cisco / Nexus
 cpe:/h:cisco:nexus:3600_series_switching_platform 3600 Series Switching Platform
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": "Bei der Cisco Nexus Serie handelt es sich um modulare Switching-Systeme der Data Center-Klasse.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in Cisco Nexus 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-2026-0523 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0523.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-0523 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0523"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory cisco-sa-nxos-cpdos-qLsv6pFD vom 2026-02-25",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cpdos-qLsv6pFD"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory cisco-sa-nxos-dsnmp-cNN39Uh vom 2026-02-25",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dsnmp-cNN39Uh"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory cisco-sa-nxos-ether-dos-Kv8YNWZ4 vom 2026-02-25",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ether-dos-Kv8YNWZ4"
      }
    ],
    "source_lang": "en-US",
    "title": "Cisco Nexus: Mehrere Schwachstellen erm\u00f6glichen Denial of Service",
    "tracking": {
      "current_release_date": "2026-02-25T23:00:00.000+00:00",
      "generator": {
        "date": "2026-02-26T09:57:04.158+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.5.0"
        }
      },
      "id": "WID-SEC-W-2026-0523",
      "initial_release_date": "2026-02-25T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-02-25T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "9000 Series Fabric Switches",
                "product": {
                  "name": "Cisco Nexus 9000 Series Fabric Switches",
                  "product_id": "T051219",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:cisco:nexus:9000_series_fabric_switches"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "3600 Series Switching Platform",
                "product": {
                  "name": "Cisco Nexus 3600 Series Switching Platform",
                  "product_id": "T051220",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:cisco:nexus:3600_series_switching_platform"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "9500-R Series Switching Platform",
                "product": {
                  "name": "Cisco Nexus 9500-R Series Switching Platform",
                  "product_id": "T051221",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:cisco:nexus:9500-r_series_switching_platform"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Nexus"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20033",
      "product_status": {
        "known_affected": [
          "T051219"
        ]
      },
      "release_date": "2026-02-25T23:00:00.000+00:00",
      "title": "CVE-2026-20033"
    },
    {
      "cve": "CVE-2026-20048",
      "product_status": {
        "known_affected": [
          "T051219"
        ]
      },
      "release_date": "2026-02-25T23:00:00.000+00:00",
      "title": "CVE-2026-20048"
    },
    {
      "cve": "CVE-2026-20051",
      "product_status": {
        "known_affected": [
          "T051221",
          "T051220"
        ]
      },
      "release_date": "2026-02-25T23:00:00.000+00:00",
      "title": "CVE-2026-20051"
    }
  ]
}


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