Out-of-Bounds Affecting libheif package, versions <1.23.1-1


Severity

Recommended
0.0
low
0
10

Based on Debian security rating.

Threat Intelligence

EPSS
0.12% (2nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBHEIF-15560180
  • published14 Mar 2026
  • disclosed11 Mar 2026

Introduced: 11 Mar 2026

CVE-2026-3949  (opens in a new tab)
CWE-119  (opens in a new tab)
CWE-125  (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.

A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue.

CVSS Base Scores

version 3.1