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CVE-2000-0440

Status: ModifiedMedium (5)—💥 Exploit

NetBSD 1.4.2 and earlier allows remote attackers to cause a denial of service by sending a packet with an unaligned IP timestamp option.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Affected technologies (2)

Freebsd — FreebsdNetbsd — Netbsd

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2000-0440",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2000-05-01T04:00:00.000",
  "references": [
    {
      "url": "ftp://ftp.netbsd.org/pub/NetBSD/misc/security/advisories/NetBSD-SA2000-002.txt.asc",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2000-05/0088.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/1173",
      "source": "cve@mitre.org"
    },
    {
      "url": "ftp://ftp.netbsd.org/pub/NetBSD/misc/security/advisories/NetBSD-SA2000-002.txt.asc",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2000-05/0088.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/1173",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "NetBSD 1.4.2 and earlier allows remote attackers to cause a denial of service by sending a packet with an unaligned IP timestamp option."
    }
  ],
  "lastModified": "2026-06-16T21:51:44.310",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:3.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B982342C-1981-4C55-8044-AFE4D87623DF"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:4.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D0A585A1-FF82-418F-90F8-072458DB7816"
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:5.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "61EBA52A-2D8B-4FB5-866E-AE67CE1842E7"
            },
            {
              "criteria": "cpe:2.3:o:netbsd:netbsd:1.4.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1C288A88-11C6-429E-A109-0395D0989264"
            },
            {
              "criteria": "cpe:2.3:o:netbsd:netbsd:1.4.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "516C6D9A-7483-4E36-A2E0-42698161AD31"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}