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CVE-2026-64831

Estado: AnalizadaAlta (8.7)—

FFmpeg versions 8.0 through 8.1.2 contains a stack buffer overflow vulnerability in the Vulkan HEVC hardware decoder that allows remote attackers to overwrite return addresses and adjacent stack frames by supplying a crafted HEVC/H.265 bitstream. Attackers can embed a malicious vps_num_hrd_parameters value exceeding HEVC_MAX_SUB_LAYERS in any supported container format to overflow stack-allocated arrays in the vk_hevc_end_frame function, potentially achieving arbitrary code execution.

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.

Vector CVSS requiere UI:P (interacción del usuario: abrir fichero HEVC preparado). Stack buffer overflow permite ejecución de código arbitrario (VC:H). T1203 es la técnica correcta para explotación remota que requiere interacción del usuario.

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

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (1)

Ffmpeg — Ffmpeg

CWE

Referencias

JSON original (NVD)

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          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2026-07-22T17:16:58.697",
  "references": [
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      "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/92737390dc133daadce47dd7d2ec8ef3d9ebcbed",
      "tags": [
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      "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23665",
      "tags": [
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    }
  ],
  "lastModified": "2026-07-28T17:00:51.803",
  "configurations": [
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}