CVE-2016-1946

Status: ModifiedCritical (9.8)—

The MoofParser::Metadata function in binding/MoofParser.cpp in libstagefright in Mozilla Firefox before 44.0 does not limit the size of read operations, which might allow remote attackers to cause a denial of service (integer overflow and buffer overflow) or possibly have unspecified other impact via crafted metadata.

CVSS

Version: 3.0
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base score: 9.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 5.64%
Percentile among all scored CVEs: 93
Score date: 10/11/2026

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).

Affected technologies (3)

Mozilla — Firefox Opensuse — Leap Opensuse — Opensuse

CWEs

CWE-119, CWE-189

References

Raw JSON (NVD)

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{
  "id": "CVE-2016-1946",
  "cveTags": [],
  "metrics": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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        "acInsufInfo": false,
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        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
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    "cvssMetricV30": [
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
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  "affected": [
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      "source": "security@mozilla.org",
      "affectedData": [
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          "vendor": "n/a",
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          "versions": [
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  "published": "2016-01-31T18:59:12.433",
  "references": [
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00001.html",
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      "url": "http://www.ubuntu.com/usn/USN-2880-1",
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1232069",
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  "vulnStatus": "Modified",
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-119"
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        {
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          "value": "CWE-189"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The MoofParser::Metadata function in binding/MoofParser.cpp in libstagefright in Mozilla Firefox before 44.0 does not limit the size of read operations, which might allow remote attackers to cause a denial of service (integer overflow and buffer overflow) or possibly have unspecified other impact via crafted metadata."
    },
    {
      "lang": "es",
      "value": "La función MoofParser::Metadata en binding/MoofParser.cpp en libstagefright en Mozilla Firefox en versiones anteriores a 44.0 no limita el tamaño de las operaciones de lectura, lo que podría permitir a atacantes remotos causar una denegación de servicio (desbordamiento de entero y desbordamiento de buffer) o posiblemente tener otro impacto no especificado a través de metadatos manipulados."
    }
  ],
  "lastModified": "2026-06-17T00:42:54.840",
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    {
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        {
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}