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CVE-2003-0653

Status: ModifiedMedium (5)—

The OSI networking kernel (sys/netiso) in NetBSD 1.6.1 and earlier does not use a BSD-required "PKTHDR" mbuf when sending certain error responses to the sender of an OSI packet, which allows remote attackers to cause a denial of service (kernel panic or crash) via certain OSI packets.

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).

Affected technologies (1)

Netbsd — Netbsd

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2003-0653",
  "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": "2003-08-27T04:00:00.000",
  "references": [
    {
      "url": "ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2003-010.txt.asc",
      "source": "cve@mitre.org"
    },
    {
      "url": "ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2003-010.txt.asc",
      "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": "The OSI networking kernel (sys/netiso) in NetBSD 1.6.1 and earlier does not use a BSD-required \"PKTHDR\" mbuf when sending certain error responses to the sender of an OSI packet, which allows remote attackers to cause a denial of service (kernel panic or crash) via certain OSI packets."
    },
    {
      "lang": "es",
      "value": "El kernel de red OSI (sys/netiso) en NetBSD 1.6.1 y anteriores no usa un mbuf \"PKTHDR\" requerido por BSD cuando envia ciertas respuestas de error al enviador de un paquete OSI, lo que permite a atacantes remotos causar un denegación de servicio (caída o pánico del kernel) mediante ciertos paquetes OSI."
    }
  ],
  "lastModified": "2026-06-16T22:02:35.680",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}