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CVE-2003-0551

Status: ModifiedMedium (5)—
Severity5Medium · CVSS 2.0
Exploitation probability2.28 %higher than 83% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

The STP protocol implementation in Linux 2.4.x does not properly verify certain lengths, which could allow attackers to cause a denial of service.

CVSS

Base score
5
Version
2.0
Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
2.28 %
Percentile among all scored CVEs
83
Score date
10/20/2026

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)

Redhat — Linux

CWEs

References

Show 12 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2003-0551",
  "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": "http://www.debian.org/security/2004/dsa-358",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2004/dsa-423",
      "tags": [
        "Exploit"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-198.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-238.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-239.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A384",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2004/dsa-358",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2004/dsa-423",
      "tags": [
        "Exploit"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-198.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-238.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-239.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A384",
      "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 STP protocol implementation in Linux 2.4.x does not properly verify certain lengths, which could allow attackers to cause a denial of service."
    },
    {
      "lang": "es",
      "value": "La implementación del protocolo STP en Linux 2.4.x no verifica adecuadamente ciertas longitudes, lo que podría permitir a atacantes causar una denegación de servicio."
    }
  ],
  "lastModified": "2026-06-16T22:02:25.300",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:redhat:linux:2.4.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9E297EF4-139A-4FF4-AF1B-F3559B992775"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}