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Vulnerabilities CVE-2026-75142

CVE-2026-75142

High
Open
TLP:CLEAR

FFmpeg Stack Buffer Overflow in MPEG-PS Muxer via mpegenc.c

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Description

FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the overflow during MPEG-PS muxing.

Details

CVSS Score
8.5
CVSS Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 19, 2026
Last Modified
Aug 21, 2026
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