{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2019-1738",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2019-1738",
    "idYear": 2019,
    "status": "PUBLISHED",
    "publishedAt": "2019-03-27T23:15:14.394Z",
    "updatedAt": "2024-11-19T19:14:01.380Z",
    "importedAt": "2026-10-24T01:56:08.750Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerability",
      "summary": "A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to a parsing issue on DNS packets. An attacker could exploit these vulnerabilities by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco IOS and IOS-XE Software",
          "versions": [
            {
              "version": "3.16.0S",
              "status": "affected"
            },
            {
              "version": "3.16.1S",
              "status": "affected"
            },
            {
              "version": "3.16.0aS",
              "status": "affected"
            },
            {
              "version": "3.16.1aS",
              "status": "affected"
            },
            {
              "version": "3.16.2S",
              "status": "affected"
            },
            {
              "version": "3.16.2aS",
              "status": "affected"
            },
            {
              "version": "3.16.0bS",
              "status": "affected"
            },
            {
              "version": "3.16.0cS",
              "status": "affected"
            },
            {
              "version": "3.16.3S",
              "status": "affected"
            },
            {
              "version": "3.16.2bS",
              "status": "affected"
            },
            {
              "version": "3.16.3aS",
              "status": "affected"
            },
            {
              "version": "3.16.4S",
              "status": "affected"
            },
            {
              "version": "3.16.4aS",
              "status": "affected"
            },
            {
              "version": "3.16.4bS",
              "status": "affected"
            },
            {
              "version": "3.16.4gS",
              "status": "affected"
            },
            {
              "version": "3.16.5S",
              "status": "affected"
            },
            {
              "version": "3.16.4cS",
              "status": "affected"
            },
            {
              "version": "3.16.4dS",
              "status": "affected"
            },
            {
              "version": "3.16.4eS",
              "status": "affected"
            },
            {
              "version": "3.16.5aS",
              "status": "affected"
            },
            {
              "version": "3.17.0S",
              "status": "affected"
            },
            {
              "version": "3.17.1S",
              "status": "affected"
            },
            {
              "version": "3.17.2S",
              "status": "affected"
            },
            {
              "version": "3.17.1aS",
              "status": "affected"
            },
            {
              "version": "3.17.3S",
              "status": "affected"
            },
            {
              "version": "3.17.4S",
              "status": "affected"
            },
            {
              "version": "3.2.0JA",
              "status": "affected"
            },
            {
              "version": "16.2.1",
              "status": "affected"
            },
            {
              "version": "16.2.2",
              "status": "affected"
            },
            {
              "version": "16.3.1",
              "status": "affected"
            },
            {
              "version": "16.3.2",
              "status": "affected"
            },
            {
              "version": "16.3.3",
              "status": "affected"
            },
            {
              "version": "16.3.1a",
              "status": "affected"
            },
            {
              "version": "16.3.4",
              "status": "affected"
            },
            {
              "version": "16.4.1",
              "status": "affected"
            },
            {
              "version": "16.4.2",
              "status": "affected"
            },
            {
              "version": "16.4.3",
              "status": "affected"
            },
            {
              "version": "16.5.1",
              "status": "affected"
            },
            {
              "version": "16.5.1a",
              "status": "affected"
            },
            {
              "version": "16.5.1b",
              "status": "affected"
            },
            {
              "version": "3.18.0aS",
              "status": "affected"
            },
            {
              "version": "3.18.0S",
              "status": "affected"
            },
            {
              "version": "3.18.1S",
              "status": "affected"
            },
            {
              "version": "3.18.2S",
              "status": "affected"
            },
            {
              "version": "3.18.3S",
              "status": "affected"
            },
            {
              "version": "3.18.4S",
              "status": "affected"
            },
            {
              "version": "3.18.0SP",
              "status": "affected"
            },
            {
              "version": "3.18.1SP",
              "status": "affected"
            },
            {
              "version": "3.18.1aSP",
              "status": "affected"
            },
            {
              "version": "3.18.1gSP",
              "status": "affected"
            },
            {
              "version": "3.18.1bSP",
              "status": "affected"
            },
            {
              "version": "3.18.1cSP",
              "status": "affected"
            },
            {
              "version": "3.18.2SP",
              "status": "affected"
            },
            {
              "version": "3.18.1hSP",
              "status": "affected"
            },
            {
              "version": "3.18.2aSP",
              "status": "affected"
            },
            {
              "version": "3.18.1iSP",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}