Medium severity5.3NVD Advisory· Published Nov 9, 2026
CVE-2026-125253
CVE-2026-125253
Description
FFmpeg through 9.0.2 contains an integer overflow in cbs_vp9_split_fragment() in libavcodec/cbs_vp9.c that wraps the superframe size check on 32-bit builds. Attackers can supply a crafted VP9 packet with a forged superframe index containing near-2^32 frame sizes, causing out-of-bounds reads that crash 32-bit applications.
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Affected products
1Patches
Vulnerability mechanics
References
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