CVE-2026-48029 | libheif is a HEIF and AVIF file format decoder and encoder. … | CVSS 7.1 HIGH

Description

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.19.0 through 1.21.2 have a heap OOB read in ImageItem_Grid::decode_grid_tile via irot-induced tile-coordinate underflow. Version 1.22.0 fixes the issue.

Metadata

CVE ID: CVE-2026-48029
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-20 17:44 UTC
Published: 2026-07-22 14:13 UTC
Last updated: 2026-07-22 15:20 UTC
Primary CWE: CWE-125
CWE-125: Out-of-bounds Read
Vendor / Product: strukturag / libheif
Sources: cve.org · NVD

Severity & Metrics

7.1 HIGH CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
strukturag	libheif	—	>= 1.19.0, < 1.22.0

Weakness (CWE)

CWE	Source	Description
CWE-125	cna	CWE-125: Out-of-bounds Read
CWE-191	cna	CWE-191: Integer Underflow (Wrap or Wraparound)

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References (2)

https://github.com/strukturag/libheif/security/advisories/GHSA-6x5f-qchq-cxqv https://github.com/strukturag/libheif/security/advisories/GHSA-6x5f-qchq-cxqv
https://github.com/strukturag/libheif/commit/e523ec0bf379110b7c33d4c159f8b1202d332157 https://github.com/strukturag/libheif/commit/e523ec0bf379110b7c33d4c159f8b1202d332157