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CVE-2007-5551

Status: ModifiedHigh (7.1)—
Severity7.1High · CVSS 2.0
Exploitation probability1.92 %higher than 80% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Off-by-one error in Cisco IOS allows remote attackers to execute arbitrary code via unspecified vectors that trigger a heap-based buffer overflow. NOTE: as of 20071016, the only disclosure is a vague pre-advisory with no actionable information. However, since it is from a well-known researcher, it is being assigned a CVE identifier for tracking purposes.

CVSS

Base score
7.1
Version
2.0
Vector
AV:N/AC:M/Au:N/C:N/I:N/A:C

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
1.92 %
Percentile among all scored CVEs
80
Score date
10/22/2026

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)

Cisco — IOS

CWEs

References

Show 2 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2007-5551",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "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": "2007-10-18T20:17:00.000",
  "references": [
    {
      "url": "http://www.irmplc.com/index.php/111-Vendor-Alerts",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.irmplc.com/index.php/111-Vendor-Alerts",
      "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": "Off-by-one error in Cisco IOS allows remote attackers to execute arbitrary code via unspecified vectors that trigger a heap-based buffer overflow.  NOTE: as of 20071016, the only disclosure is a vague pre-advisory with no actionable information. However, since it is from a well-known researcher, it is being assigned a CVE identifier for tracking purposes."
    },
    {
      "lang": "es",
      "value": "Error de superación de límite (off-by-one) en Cisco IOS permite a atacantes remotos ejecutar código de su elección mediante vectores no especificados que provocan un desbordamiento de búfer basado en montículo. NOTA: a fecha de 16/10/2007, la única revelación es un preaviso vago sin información de uso inmediato. Sin embargo, debido a que se trata de un investigador reputado, se la ha asignado un identificador CVE con propósitos de seguimiento."
    }
  ],
  "lastModified": "2026-06-16T22:46:23.063",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5802E2D8-7069-474C-826F-AEE7B50BFE34"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}