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CVE-2015-6639

Status: ModifiedHigh (7.8)—Exploit
Severity7.8High · CVSS 3.0
Exploitation probability6.96 %higher than 94% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitAvailablePublished on Exploit-DB · Proof of concept on GitHub (unverified)

The Widevine QSEE TrustZone application in Android 5.x before 5.1.1 LMY49F and 6.0 before 2016-01-01 allows attackers to gain privileges via a crafted application that leverages QSEECOM access, aka internal bug 24446875.

CVSS

Base score
7.8
Version
3.0
Vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
6.96 %
Percentile among all scored CVEs
94
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).

Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Google — Android

CWEs

References

Show 10 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2015-6639",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@android.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-01-06T19:59:04.313",
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/172637/Widevine-Trustlet-5.x-6.x-7.x-PRDiagVerifyProvisioning-Buffer-Overflow.html",
      "source": "security@android.com"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2023/May/26",
      "source": "security@android.com"
    },
    {
      "url": "http://source.android.com/security/bulletin/2016-01-01.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@android.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1034592",
      "source": "security@android.com"
    },
    {
      "url": "https://www.exploit-db.com/exploits/39757/",
      "source": "security@android.com"
    },
    {
      "url": "http://packetstormsecurity.com/files/172637/Widevine-Trustlet-5.x-6.x-7.x-PRDiagVerifyProvisioning-Buffer-Overflow.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2023/May/26",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://source.android.com/security/bulletin/2016-01-01.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1034592",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.exploit-db.com/exploits/39757/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Widevine QSEE TrustZone application in Android 5.x before 5.1.1 LMY49F and 6.0 before 2016-01-01 allows attackers to gain privileges via a crafted application that leverages QSEECOM access, aka internal bug 24446875."
    },
    {
      "lang": "es",
      "value": "La aplicación Widevine QSEE TrustZone en Android 5.x en versiones anteriores a 5.1.1 LMY49F y 6.0 en versiones anteriores a 2016-01-01 permite a atacantes obtener privilegios a través de una aplicación manipulada que aprovecha el acceso QSEECOM, también conocida como error interno 24446875."
    }
  ],
  "lastModified": "2026-06-17T00:31:10.473",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:google:android:5.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7C4E6353-B77A-464F-B7DE-932704003B33"
            },
            {
              "criteria": "cpe:2.3:o:google:android:5.1.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B1D94CDD-DE7B-444E-A3AE-AE9C9A779374"
            },
            {
              "criteria": "cpe:2.3:o:google:android:6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E70C6D8D-C9C3-4D92-8DFC-71F59E068295"
            },
            {
              "criteria": "cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "691FA41B-C2CE-413F-ABB1-0B22CB322807"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@android.com"
}