CVE Watch19 ago 2026

CVE-2026-75145

FFmpeg before commit b4c199c contains an incorrect integer narrowing conversion in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The OB

CVSS

5.8

Medio

EPSS

—

KEV

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Exploit Today

0-100

Publicado: 19 ago 2026 · Última mod.: 19 ago 2026 · CWE-681

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

FFmpeg before commit b4c199c contains an incorrect integer narrowing conversion in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The OBU size is cast to long before comparison against the remaining frame size. On targets where long is 32 bits, including 64-bit Windows, sufficiently large OBU size values are sign-flipped by the narrowing cast, producing a negative value that passes the payload size check. This allows an oversized OBU to bypass the safety bound on affected platforms, leading to out-of-bounds memory access when the oversized value is subsequently used as a copy length.

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