CVE-2026-47178

Published: Jul 21, 2026Modified: Jul 21, 2026

6.1

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Exploitability: 1.8 / Impact: 4.2

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-787

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (1)

https://github.com/strukturag/libheif/security/advisories/GHSA-5x55-x5pf-9c6g

Source: security-advisories@github.com

Timeline

No history available yet.