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NVD Vulnerability Details :

CVE-2026-47178

Awaiting Analysis

Source-security-advisories@github.com

Published At-21 Jul, 2026 | 22:17

Updated At-22 Jul, 2026 | 20:38

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	6.1	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
			N/A

Type: Secondary

Version: 3.1

Base score: 6.1

Base severity: MEDIUM

Vector:

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

Type: N/A

Version:

Base score:

Base severity: N/A

Vector:

Weaknesses

CWE ID	Type	Source
CWE-787	Secondary	security-advisories@github.com

CWE ID: CWE-787

Type: Secondary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/strukturag/libheif/security/advisories/GHSA-5x55-x5pf-9c6g	security-advisories@github.com	N/A

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

Source: security-advisories@github.com

Resource: N/A

CISA Catalog

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