CVE-2026-96611 | BDVDB-2026-378455 Detail

Description#

FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_MAX to become negative. In read_image_grid(), accumulating these values causes signed integer overflow (undefined behavior per C17 section 6.5), which on x86 wraps to a small positive value, bypassing downstream validity checks.

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Exploit#

History#

1. Version 12026-09-23Record published in the CVE List.
2. Version 22026-09-26Most recent update recorded in the CVE List.