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CVE-2015-4216

Status: ModifiedMedium (5)—

The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), and Security Management Virtual Appliance (SMAv) devices before 2015-06-25 uses the same default SSH root authorized key across different customers' installations, which makes it easier for remote attackers to bypass authentication by leveraging knowledge of a private key from another installation, aka Bug IDs CSCuu95988, CSCuu95994, and CSCuu96630.

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 (3)

Cisco — Content Security Management Virtual ApplianceCisco — Email Security Virtual ApplianceCisco — WEB Security Virtual Appliance

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2015-4216",
  "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:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-06-26T10:59:03.327",
  "references": [
    {
      "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150625-ironport",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/75417",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1032725",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1032726",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150625-ironport",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/75417",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1032725",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1032726",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), and Security Management Virtual Appliance (SMAv) devices before 2015-06-25 uses the same default SSH root authorized key across different customers' installations, which makes it easier for remote attackers to bypass authentication by leveraging knowledge of a private key from another installation, aka Bug IDs CSCuu95988, CSCuu95994, and CSCuu96630."
    },
    {
      "lang": "es",
      "value": "La característica de soporte remoto en los dispositivos Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), y Security Management Virtual Appliance (SMAv) anterior a 2015-06-25 utiliza la misma clave autorizada de root SSH por defecto en las instalaciones de clientes diferentes, lo que facilita a atacantes remotos evadir la autenticación mediante el aprovechamiento de conocimiento de una clave privada de otra instalación, también conocido como Bug IDs CSCuu95988, CSCuu95994, y CSCuu96630."
    }
  ],
  "lastModified": "2026-06-17T00:26:56.380",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:content_security_management_virtual_appliance:8.4.0.0150:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A7CC2842-66AE-4738-BF49-F491B4E1EF7A"
            },
            {
              "criteria": "cpe:2.3:a:cisco:content_security_management_virtual_appliance:9.0.0.087:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FE947E42-6952-49E4-9674-5C8E0900E3BD"
            },
            {
              "criteria": "cpe:2.3:a:cisco:email_security_virtual_appliance:8.0.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A560D3EA-57DF-48A9-B7A1-957C226C625B"
            },
            {
              "criteria": "cpe:2.3:a:cisco:email_security_virtual_appliance:8.5.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F44102CA-6BE5-42AD-910B-3A0BA911FB53"
            },
            {
              "criteria": "cpe:2.3:a:cisco:email_security_virtual_appliance:8.5.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7C7E609D-0414-40AD-BD7D-D708C3B36986"
            },
            {
              "criteria": "cpe:2.3:a:cisco:email_security_virtual_appliance:9.0.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C699F035-7418-4344-8FDE-7C180176186D"
            },
            {
              "criteria": "cpe:2.3:a:cisco:web_security_virtual_appliance:7.7.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ABB49075-4E5C-46F2-8436-0A7BA7161972"
            },
            {
              "criteria": "cpe:2.3:a:cisco:web_security_virtual_appliance:8.0.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "048F0725-C1B9-4D21-B7FE-2E81E72CFBD3"
            },
            {
              "criteria": "cpe:2.3:a:cisco:web_security_virtual_appliance:8.5.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C7837ACC-B42E-4099-BF9F-87523637C91A"
            },
            {
              "criteria": "cpe:2.3:a:cisco:web_security_virtual_appliance:8.5.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "715190B6-9EBD-42DB-98B7-3FD410536F97"
            },
            {
              "criteria": "cpe:2.3:a:cisco:web_security_virtual_appliance:8.6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E063B3C2-53CE-4732-8482-6A4B8EF0D02E"
            },
            {
              "criteria": "cpe:2.3:a:cisco:web_security_virtual_appliance:8.7.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "675388FE-6B3D-4C90-BFB4-B997DDF47AB2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}