CVE-2026-47178
Last modified
CVE-2026-47178 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Struktur | Libheif | >= 1.19.0, < 1.22.0 |
References
- https://github.com/strukturag/libheif/security/advisories/GHSA-5x55-x5pf-9c6gExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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