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CVE-2016-6586

Status: ModifiedLow (3.7)—

A security bypass vulnerability exists in Symantec Norton Mobile Security for Android before 3.16, which could let a malicious user conduct a man-in-the-middle via specially crafted JavaScript to add arbitrary URLs to the URL whitelist.

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)

Symantec — Norton Mobile Security

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2016-6586",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.7,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "secure@symantec.com",
      "affectedData": [
        {
          "vendor": "Symantec",
          "product": "Norton Mobile Security for Android",
          "versions": [
            {
              "status": "affected",
              "version": "before 3.16"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-01-08T17:15:10.743",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/93901",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1037225",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "https://support.symantec.com/us/en/article.symsa1384.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/93901",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1037225",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.symantec.com/us/en/article.symsa1384.html",
      "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": "A security bypass vulnerability exists in Symantec Norton Mobile Security for Android before 3.16, which could let a malicious user conduct a man-in-the-middle via specially crafted JavaScript to add arbitrary URLs to the URL whitelist."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de omisión de seguridad en Symantec Norton Mobile Security para Android versiones anteriores a la versión 3.16, lo que podría permitir a un usuario malicioso llevar a cabo un ataque de tipo man-in-the-middle por medio de un JavaScript especialmente diseñado para agregar unas URL arbitrarias a la lista blanca de URL."
    }
  ],
  "lastModified": "2026-06-17T00:51:24.600",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:symantec:norton_mobile_security:*:*:*:*:*:android:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D2C5E334-EA30-4C31-BBBB-83C938CAFE8F",
              "versionEndExcluding": "3.16"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@symantec.com"
}