Low severity3.3NVD Advisory· Published Nov 9, 2026
CVE-2026-125266
CVE-2026-125266
Description
FFmpeg through 9.0.2 contains an uninitialized stack memory disclosure vulnerability in old_codec23() of libavcodec/sanm.c that leaks stack bytes into decoded frames. Attackers can supply a crafted LucasArts SMUSH/SANM animation using codec 23 with an inline table to expose decoder process stack memory in output video.
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Affected products
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