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CVE-2026-48029— libheif: heap OOB read in ImageItem_Grid::decode_grid_tile via irot-induced tile-coordinate underflow

Quick assessment

Affected
strukturag libheif
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

strukturag libheif是strukturag的图像编解码库。 strukturag libheif 1.19.0版本至1.21.2版本存在安全漏洞，该漏洞源于ImageItem_Grid::decode_grid_tile中存在由irot引起的tile坐标下溢导致的堆越界读取。

CVSS 7.1 · High EPSS 0.36% · P27

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
strukturag libheif >= 1.19.0, < 1.22.0 affected
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I. Basic Information for CVE-2026-48029

Vulnerability Information
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Vulnerability Title
libheif: heap OOB read in ImageItem_Grid::decode_grid_tile via irot-induced tile-coordinate underflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
strukturag libheif 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
strukturag libheif是strukturag的图像编解码库。 strukturag libheif 1.19.0版本至1.21.2版本存在安全漏洞，该漏洞源于ImageItem_Grid::decode_grid_tile中存在由irot引起的tile坐标下溢导致的堆越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
strukturag libheif >= 1.19.0, < 1.22.0 -

II. Public POCs for CVE-2026-48029

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8909 chars
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III. Intelligence Information for CVE-2026-48029

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Patches & Fixes for CVE-2026-48029 (1)

Vendor Advisories for CVE-2026-48029 (1)

IV. Related Vulnerabilities

Same product: libheif
Same vendor: strukturag
Same weakness: CWE-125

V. Comments for CVE-2026-48029

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