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CVE-2026-35203

Estado: AnalizadaAlta (7.5)—

ZLMediaKit is a streaming media service framework. the VP9 RTP payload parser in ext-codec/VP9Rtp.cpp reads multiple fields from the RTP payload based on flag bits in the first byte, without verifying that sufficient data exists in the buffer. A crafted VP9 RTP packet with a 1-byte payload (0xFF, all flags set) causes the parser to read past the end of the allocated buffer, resulting in a heap-buffer-overflow. This vulnerability is fixed with commit 435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d.

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.

Vulnerabilidad remota sin autenticación (AV:N, PR:N, UI:N) en parser VP9 RTP de servicio de streaming expuesto; heap-buffer-overflow causa DoS mediante paquete malformado.

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 TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Zlmediakit — Zlmediakit

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-35203",
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          "options": [
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          "version": "2.0.3",
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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  "vulnStatus": "Analyzed",
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      "value": "ZLMediaKit is a streaming media service framework. the VP9 RTP payload parser in ext-codec/VP9Rtp.cpp reads multiple fields from the RTP payload based on flag bits in the first byte, without verifying that sufficient data exists in the buffer. A crafted VP9 RTP packet with a 1-byte payload (0xFF, all flags set) causes the parser to read past the end of the allocated buffer, resulting in a heap-buffer-overflow. This vulnerability is fixed with commit 435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d."
    },
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      "value": "ZLMediaKit es un framework de servicio de medios de transmisión. El analizador de carga útil RTP VP9 en ext-codec/VP9Rtp.cpp lee múltiples campos de la carga útil RTP basándose en bits de bandera en el primer byte, sin verificar que existan datos suficientes en el búfer. Un paquete RTP VP9 manipulado con una carga útil de 1 byte (0xFF, todos los indicadores activados) hace que el analizador lea más allá del final del búfer asignado, lo que resulta en un desbordamiento de búfer de pila (heap-buffer-overflow). Esta vulnerabilidad se corrige con el commit 435dcbcbbf700fd63b2ca9eac6cef3b5ea75169d."
    }
  ],
  "lastModified": "2026-07-24T21:10:00.143",
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