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CVE-2015-3839

Status: ModifiedMedium (5.5)—PoC
Severity5.5Medium · CVSS 3.0
Exploitation probability0.40 %higher than 32% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitAvailableProof of concept on GitHub (unverified)

The updateMessageStatus function in Android 5.1.1 and earlier allows local users to cause a denial of service (NULL pointer exception and process crash).

CVSS

Base score
5.5
Version
3.0
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.40 %
Percentile among all scored CVEs
32
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 8 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2015-3839",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@android.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-08-07T17:29:00.377",
  "references": [
    {
      "url": "http://blog.trendmicro.com/trendlabs-security-intelligence/os-x-zero-days-on-the-rise-a-2015-midyear-review-on-advanced-attack-surfaces/",
      "tags": [
        "Technical Description",
        "Third Party Advisory"
      ],
      "source": "security@android.com"
    },
    {
      "url": "http://blog.trendmicro.com/trendlabs-security-intelligence/two-new-android-bugs-mess-up-messaging-may-lead-to-multiple-send-charges/",
      "tags": [
        "Technical Description",
        "Third Party Advisory"
      ],
      "source": "security@android.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/100158",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@android.com"
    },
    {
      "url": "https://huntcve.github.io/2017/02/13/cveupdate/",
      "tags": [
        "Broken Link"
      ],
      "source": "security@android.com"
    },
    {
      "url": "http://blog.trendmicro.com/trendlabs-security-intelligence/os-x-zero-days-on-the-rise-a-2015-midyear-review-on-advanced-attack-surfaces/",
      "tags": [
        "Technical Description",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://blog.trendmicro.com/trendlabs-security-intelligence/two-new-android-bugs-mess-up-messaging-may-lead-to-multiple-send-charges/",
      "tags": [
        "Technical Description",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/100158",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://huntcve.github.io/2017/02/13/cveupdate/",
      "tags": [
        "Broken Link"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The updateMessageStatus function in Android 5.1.1 and earlier allows local users to cause a denial of service (NULL pointer exception and process crash)."
    },
    {
      "lang": "es",
      "value": "La función updateMessageStatus en Android 5.1.1 y anteriores permite que usuarios locales provoquen una denegación de servicio (excepción de puntero nulo y caída de procesos)."
    }
  ],
  "lastModified": "2026-06-17T00:26:22.267",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:google:android:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B349128A-CD08-4B2B-975B-650831183DBE",
              "versionEndIncluding": "5.1.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@android.com"
}