CVE-2026-125096mediumCWE-908

CVE-2026-125096: medium-severity vulnerability in FFmpeg

FFmpeg through 9.0.2 Uninitialized Memory Disclosure via Tiertex SEQ Decoder

Published

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10Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 4.8
FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in libavcodec/tiertexseqv.c that allows attackers to leak stack contents by triggering failed RLE unpacking. Attackers can supply a crafted Tiertex SEQ file so seq_decode_op1() copies an uninitialized 64-byte stack block into decoded frames, exposing stack memory in visible output.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
FFmpeg · FFmpeg
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