CVE-2026-125190mediumCWE-908

CVE-2026-125190: medium-severity vulnerability in FFmpeg

FFmpeg through 9.0.2 Uninitialized Stack Memory Disclosure via MVC2 Decoder

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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 information disclosure vulnerability in decode_mvc2() in libavcodec/mvcdec.c that leaks uninitialized stack memory through unchecked palette indices. Attackers can supply a crafted MVC2 stream declaring few colors but referencing higher palette indices, copying process stack contents into decoded RGB frames.
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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