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CVE-2018-11750

Status: ModifiedMedium (6.5)—

Previous releases of the Puppet cisco_ios module did not validate a host's identity before starting a SSH connection. As of the 0.4.0 release of cisco_ios, host key checking is enabled by default.

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)

Puppet — Cisco IOS Module

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-11750",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@puppet.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-10-02T19:29:00.837",
  "references": [
    {
      "url": "https://puppet.com/security/cve/CVE-2018-11750",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@puppet.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/150978",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "nvd@nist.gov"
    },
    {
      "url": "https://puppet.com/security/cve/CVE-2018-11750",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Previous releases of the Puppet cisco_ios module did not validate a host's identity before starting a SSH connection. As of the 0.4.0 release of cisco_ios, host key checking is enabled by default."
    },
    {
      "lang": "es",
      "value": "Las versiones anteriores del módulo cisco_ios para Puppet no validaron la identidad de un host antes de comenzar una conexión SSH. En la versión 0.4.0 de cisco_ios, la comprobación de claves de host está habilitada por defecto."
    }
  ],
  "lastModified": "2026-06-17T01:36:30.820",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:puppet:cisco_ios_module:*:*:*:*:*:puppet:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D73D456A-1027-4928-A9A3-B7A80B675D85",
              "versionEndExcluding": "0.4.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@puppet.com"
}