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CVE-2014-7933

Status: ModifiedHigh (7.5)—
Severity7.5High · CVSS 2.0
Exploitation probability2.80 %higher than 86% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Use-after-free vulnerability in the matroska_read_seek function in libavformat/matroskadec.c in FFmpeg before 2.5.1, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted Matroska file that triggers improper maintenance of tracks data.

CVSS

Base score
7.5
Version
2.0
Vector
AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
2.80 %
Percentile among all scored CVEs
86
Score date
10/21/2026

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 (2)

Ffmpeg — FfmpegGoogle — Chrome

CWEs

References

Show 24 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2014-7933",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "chrome-cve-admin@google.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-01-22T22:59:14.740",
  "references": [
    {
      "url": "http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=490a3ebf36821b81f73e34ad3f554cb523dd2682",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://googlechromereleases.blogspot.com/2015/01/stable-update.html",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00005.html",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2015-0093.html",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://secunia.com/advisories/62383",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://secunia.com/advisories/62575",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://secunia.com/advisories/62665",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-201502-13.xml",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/72288",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1031623",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2476-1",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "https://code.google.com/p/chromium/issues/detail?id=427266",
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=490a3ebf36821b81f73e34ad3f554cb523dd2682",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://googlechromereleases.blogspot.com/2015/01/stable-update.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00005.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2015-0093.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/62383",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/62575",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/62665",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-201502-13.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/72288",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1031623",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2476-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://code.google.com/p/chromium/issues/detail?id=427266",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "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 matroska_read_seek function in libavformat/matroskadec.c in FFmpeg before 2.5.1, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted Matroska file that triggers improper maintenance of tracks data."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de uso después de liberación en la función matroska_read_seek en libavformat/matroskadec.c en FFmpeg anterior a 2.5.1, utilizado en Google Chrome anterior a 40.0.2214.91, permite a atacantes remotos causar una denegación de servicio o posiblemente tener otro impacto no especificado a través de un fichero Matroska manipulado que provoca un mantenimiento incorrecto de los datos de pistas."
    }
  ],
  "lastModified": "2026-06-17T00:15:58.507",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B248CC65-0394-4432-9520-52E99C17EA4A",
              "versionEndIncluding": "40.0.2214.85"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5CC99B6F-DB5F-4F4A-9465-0262D5ADC134",
              "versionEndIncluding": "2.5.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/416.html\">CWE-416: Use After Free</a>",
  "sourceIdentifier": "chrome-cve-admin@google.com"
}