Low severity3.3NVD Advisory· Published Nov 9, 2026

CVE-2026-125095

Description

FFmpeg through 9.0.2 contains an uninitialized memory use vulnerability in the C93 video decoder in libavcodec/c93.c, where decode_frame() never checks how many color table bytes were copied. Attackers can supply a crafted truncated Interplay C93 file so draw_n_color() writes uninitialized stack bytes into decoded frames, disclosing stack memory contents.

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Affected products

FFmpeg/Ffmpegllm-fuzzy
Range: <=9.0.2

Patches

Vulnerability mechanics

References

code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25715nvd
github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/c93.cnvd
github.com/FFmpeg/FFmpeg/commit/ac0106851a4dac555c967421dfc96c0135183133nvd
www.vulncheck.com/advisories/ffmpeg-through-9.0.2-c93-decoder-uninitialized-stack-memory-disclosurenvd

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cvss	0.214
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000