CVE-2026-47178 | BDVDB-2026-350445 Detail

Description#

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.19.0 through 1.21.2, a crafted HEIF file (uncompressed `unci` codec, tiled, component-interleaved, 4:2:0) triggers a heap out-of-bounds write in libheif's uncompressed tile decoder. The write overwrites the C++ vtable pointer of an adjacent `unc_decoder_component_interleave` object; the next virtual call dispatches to an attacker-chosen address. Version 1.22.0 patches the issue.

Impact#

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Exploit#

History#

1. Version 12026-07-21Record published in the CVE List.
2. Version 22026-07-22Most recent update recorded in the CVE List.