CVE-2016-1979

Estado: ModificadaAlta (8.8)—
Use-after-free vulnerability in the PK11_ImportDERPrivateKeyInfoAndReturnKey function in Mozilla Network Security Services (NSS) before 3.21.1, as used in Mozilla Firefox before 45.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted key data with DER encoding.
CVSS

Versión: 3.0
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Puntuación base: 8.8
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.17%
Percentil entre todas las CVEs puntuadas: 82
Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)

Mozilla — Firefox Mozilla — Network Security Services
CWE

NVD-CWE-Other
Referencias

JSON original (NVD)

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{
  "id": "CVE-2016-1979",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "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": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/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": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-03-13T18:59:28.163",
  "references": [
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00027.html",
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      "source": "security@mozilla.org"
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    {
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    {
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    {
      "url": "http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html",
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    {
      "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html",
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    {
      "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html",
      "source": "security@mozilla.org"
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    {
      "url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html",
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    {
      "url": "http://www.securityfocus.com/bid/84221",
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    {
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      "url": "https://security.gentoo.org/glsa/201605-06",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "http://www.ubuntu.com/usn/USN-2973-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://bto.bluecoat.com/security-advisory/sa124",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1185033",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.21.1_release_notes",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use-after-free vulnerability in the PK11_ImportDERPrivateKeyInfoAndReturnKey function in Mozilla Network Security Services (NSS) before 3.21.1, as used in Mozilla Firefox before 45.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted key data with DER encoding."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de uso después de liberación de memoria en la función PK11_ImportDERPrivateKeyInfoAndReturnKey en Mozilla Network Security Services (NSS) en versiones anteriores a 3.21.1, como se utiliza en Mozilla Firefox en versiones anteriores a 45.0, permite a atacantes remotos causar una denegación de servicio o posiblemente tener otro impacto no especificado a través de datos de clave manipulados con codificado DER."
    }
  ],
  "lastModified": "2026-06-17T00:43:01.320",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "A2CA2CAD-3088-47C2-AE3A-607E6064E9BE",
              "versionEndIncluding": "44.0.2"
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              "versionEndIncluding": "3.21"
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  "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/416.html\">CWE-416: Use After Free</a>",
  "sourceIdentifier": "security@mozilla.org"
}