CVE-2015-6824

Status: ModifiedHigh (7.5)—

The sws_init_context function in libswscale/utils.c in FFmpeg before 2.7.2 does not initialize certain pixbuf data structures, which allows remote attackers to cause a denial of service (segmentation violation) or possibly have unspecified other impact via crafted video data.

CVSS

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

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 2.41%
Percentile among all scored CVEs: 84
Score date: 10/12/2026

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)

Canonical — Ubuntu Linux Ffmpeg — Ffmpeg

CWEs

CWE-20

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2015-6824",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "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,
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  "published": "2015-09-06T02:59:07.347",
  "references": [
    {
      "url": "http://ffmpeg.org/security.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=a5d44d5c220e12ca0cb7a4eceb0f74759cb13111",
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      "url": "https://lists.debian.org/debian-lts-announce/2018/12/msg00010.html",
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  "vulnStatus": "Modified",
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      "description": [
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          "lang": "en",
          "value": "CWE-20"
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  ],
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      "lang": "en",
      "value": "The sws_init_context function in libswscale/utils.c in FFmpeg before 2.7.2 does not initialize certain pixbuf data structures, which allows remote attackers to cause a denial of service (segmentation violation) or possibly have unspecified other impact via crafted video data."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad en la función sws_init_context en libswscale/utils.c en FFmpeg en versiones anteriores a 2.7.2, no inicializa ciertas estructuras de datos pixbuf, lo que permite a atacantes remotos causar una denegación de servicio (violación de la segmentación) o posiblemente tener otro impacto no especificado a través de datos de vídeo manipulados."
    }
  ],
  "lastModified": "2026-06-17T00:31:28.997",
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