Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-32740

Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-787 Escritura fuera de límites
Fecha de publicación:
19/05/2026
Última modificación:
20/05/2026

Descripción

*** Pendiente de traducción *** libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and prior contain a heap-buffer-overflow (write) vulnerability in the grid tile compositing, allowing an attacker to write 64 bytes of fully attacker-controlled data past the end of a chroma plane heap allocation by crafting a HEIF/AVIF file with a 1×4 grid of odd-height tiles. The overflow is triggered during normal image decoding with default build configuration. The written bytes are chroma (Cb/Cr) pixel values from the attacking tile, giving the attacker full control over the overflow content. This issue has been fixed in version 1.22.0.

Productos y versiones vulnerables

CPE Desde Hasta
cpe:2.3:a:struktur:libheif:*:*:*:*:*:*:*:* 1.22.0 (excluyendo)