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CVE-2026-107695

Estado: AnalizadaAlta (7.1)—

FFmpeg anterior a la 8.1.3 contiene una vulnerabilidad de bucle infinito en el demultiplexor HLS que permite a atacantes remotos provocar una denegación de servicio porque parse_playlist() acepta etiquetas de Master Playlist dentro de Media Playlists. Los atacantes pueden engañar a las víctimas para que abran una lista de reproducción manipulada que se referencia a sí misma y que añade variantes sin fin en hls_read_header(), provocando un consumo ilimitado de CPU y E/S.

Traducción automática del texto original de NVD (en inglés).

CVSS

Probabilidad de explotación (EPSS)

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Requiere interacción del usuario (UI:P) para abrir playlist malicioso. El resultado es DoS por consumo unbounded de CPU e I/O en hls_read_header() (CWE-835: infinite loop).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Ffmpeg — Ffmpeg

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-107695",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-107695",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-14T01:03:25.560982Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 7.1,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "PASSIVE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "repo": "https://code.ffmpeg.org/FFmpeg/FFmpeg",
          "vendor": "FFmpeg",
          "product": "FFmpeg",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "8.1.3",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:github/ffmpeg/ffmpeg",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-08T18:17:25.967",
  "references": [
    {
      "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23618",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://gist.github.com/OxBat/59574a2940092cda1b6e76bbf96f53d0",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg",
      "tags": [
        "Product"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L866",
      "tags": [
        "Product"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg/commit/0e6eef35517a",
      "tags": [
        "Patch"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg/commit/a4ddaba8bb78",
      "tags": [
        "Patch"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg/commit/c364ab176f722bdabc886845e770c9eacbc1e3e5",
      "tags": [
        "Patch"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-infinite-loop-via-self-referencing-playlist",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "FFmpeg before 8.1.3 contains an infinite loop vulnerability in the HLS demuxer that allows remote attackers to cause denial of service because parse_playlist() accepts Master Playlist tags inside Media Playlists. Attackers can trick victims into opening a crafted self-referencing playlist that endlessly adds variants in hls_read_header(), causing unbounded CPU and I/O consumption."
    }
  ],
  "lastModified": "2026-10-14T23:54:54.473",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DAB05348-0476-40F8-AF10-7843F75FA84F",
              "versionEndExcluding": "8.1.3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com"
}