{
  "id": "CVE-2004-1464",
  "url": "https://spydr.io/cve/CVE-2004-1464",
  "published": "2004-12-31T05:00:00.000Z",
  "modified": "2026-06-16T22:07:45.380Z",
  "score": 5.9,
  "severity": "medium",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "score_source": "NVD",
  "epss": 0.0484,
  "epss_percentile": 0.91772,
  "exploited": true,
  "kev": {
    "added": "2023-05-19",
    "due": "2023-06-09",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Cisco IOS Denial-of-Service Vulnerability",
    "notes": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20040827-telnet; https://nvd.nist.gov/vuln/detail/CVE-2004-1464"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "cisco"
  ],
  "products": [
    "cisco ios"
  ],
  "cwes": [
    "CWE-400"
  ],
  "description": "Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY (virtual terminal) connections), via a crafted TCP connection to the Telnet or reverse Telnet port.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 5.9,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://secunia.com/advisories/12395/",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://securitytracker.com/id?1011079",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml",
      "tags": [
        "Not Applicable",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/384230",
      "tags": [
        "Patch",
        "Third Party Advisory",
        "US Government Resource"
      ]
    },
    {
      "url": "http://www.securityfocus.com/bid/11060",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/17131",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2004-1464",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2004-1464",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}