CVE Watch31 ago 2026

CVE-2026-75143

FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its

CVSS

9.8

Crítico

EPSS

0.4%

p35

KEV

—

Exploit Today

0-100

Publicado: 19 ago 2026 · Última mod.: 31 ago 2026 · CWE-122

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-08-262026-09-23

Descripción técnica

FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.

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