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CVE-2026-48029

Struktur Libheif out-of-bounds read

7.1 HIGHPublic exploitEPSS 0.36%
  1. Published22 Jul 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Affected products

Struktur Libheif≥ 1.19.0 < 1.22.0

Remediation

Fixed in
Struktur Libheif≥ 1.22.0

References

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Frequently asked

Is CVE-2026-48029 being actively exploited?

CVE-2026-48029 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.36%.

How severe is CVE-2026-48029?

CVE-2026-48029 has a CVSS 3.1 base score of 7.1, rated high. EPSS estimates a 0.36% probability of exploitation.

Which products are affected by CVE-2026-48029?

Affected products include Struktur Libheif.

How do I fix CVE-2026-48029?

Upgrade affected software to a fixed version, for example Struktur Libheif 1.22.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-48029 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.