CVE-2026-41069 Affecting libheif package, versions <1.23.1-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBHEIF-16895048
  • published27 May 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

CVE-2026-41069  (opens in a new tab)

How to fix?

Upgrade Debian:unstable libheif to version 1.23.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libheif package and not the libheif package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1