Cloudanix VulnDB

CVE-2026-75147

High · 7.1

CVSS

7.1

EPSS

0.1%

Published

Aug 19, 2026

CISA due date

—

The record

FFmpeg before commit 983dae9 contains an out-of-bounds read in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The keyframe detection loop that searches for a sequence header OBU advanced its pointer and remaining-size counter by the encoded header length plus the OBU payload size without first bounding the OBU size against the remaining data. A crafted OBU size causes the remaining-size counter to wrap to a positive value, causing the next loop iteration to dereference a pointer beyond the end of the packet buffer. A crafted AV1 input packet muxed to RTP triggers the out-of-bounds read.

Affected packages

Ecosystem Package Introduced Fixed

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