What is CVE-2026-48029?

CVE-2026-48029 is a high-severity vulnerability in Strukturag Libheif, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-07-22.

How severe is CVE-2026-48029?

High severity. CVSS v3 base score is 7.1 out of 10.

Out-of-bounds Read in Strukturag Libheif

CVE-2026-48029

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.

Affected products

Strukturag Libheif — versions >= 1.19.0, < 1.22.0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read
CWE-191 — Integer Underflow

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-48029?: CVE-2026-48029 is a high-severity vulnerability in Strukturag Libheif, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-07-22.
How severe is CVE-2026-48029?: High severity. CVSS v3 base score is 7.1 out of 10.