CVE-2026-41069

6.5 MEDIUM

libheif is a HEIF and AVIF file format decoder and encoder

Published: 2026-05-22 · Last updated: 2026-05-27

Severity and scoring

CVSS: 6.5 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE: CWE-125, CWE-476

Affected products

Vendor	Product
struktur	libheif

Description

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entry_count == 0 (creating no chunks) while still passing validation because saio.entry_count == 0 matches, but with saiz.sample_count > 0 the SampleAuxInfoReader constructor still enters its loop. This leads to an out-of-bounds dereference on the empty chunks[0] in chunked mode.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-41069
[Other]https://github.com/strukturag/libheif/releases/tag/v1.22.0
[Vendor advisory]https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576r
[Vendor advisory]https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576r

Related CVEs

Same vendor

CVE-2026-41071 — libheif is a HEIF and AVIF file format decoder and encoder (8.1 HIGH)
CVE-2026-32740 — libheif is a HEIF and AVIF file format decoder and encoder (8.8 HIGH)
CVE-2026-32739 — libheif is a HEIF and AVIF file format decoder and encoder (6.5 MEDIUM)
CVE-2026-32738 — libheif is a HEIF and AVIF file format decoder and encoder (6.5 MEDIUM)

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